Disciplines / Research questions

数学

247 个研究主题 · 1651 个问题

“最小秩”问题是否存在有效算法?5 个问题
  1. Completing the near-extreme min-rank classification of side-information digraphs: the value n−2n-2 and min-rank two over nonbinary fields

    未解决约 14 年
  2. Lossless clique compression and provable guarantees for minrank computation in index coding

    未解决约 7 年
  3. Determining the minimum rank of the signed adjacency matrices of a graph over all signings

    未解决约 9 年
  4. Unconditional complexity of Gröbner-basis solving of the generalized MinRank problem: the Fröberg-type maximal-rank conjecture in the over-determined regime and polynomiality of F5 in the degree of the ideal

    未解决约 14 年
  5. Near-Optimal Inapproximability of Orthogonality Dimension and Minrank, and NP-Hardness of General Index Coding

    未解决约 3 年
osp\mathfrak{osp}型李超代数的特征标问题6 个问题
  1. Closed formula for Borel highest-weight conversion of finite-dimensional osp(2m|2n)-modules in the signed epsilon-delta sequence cases left open by Cheng–Kwon

    未解决约 12 年
  2. The fork-representation character conjecture for osp(2m∣2n)\mathfrak{osp}(2m|2n): a positive supersymmetric Schur expansion for [0,…,0,r,p−r][0,\ldots,0,r,p-r]

    未解决约 7 年
  3. Generalised Verma modules, closed character formulae, and cohomology for higher-rank orthosymplectic Lie superalgebras ospk∣2n\mathfrak{osp}_{k|2n}

    未解决约 16 年
  4. Uniform closed character theory for finite-dimensional irreducible modules over the general ortho-symplectic Lie superalgebras (II-type, types B(m|n) and D(m|n))

    未解决约 17 年
  5. Maximal atypical block equivalence for osp(2k+2∣2k)\mathfrak{osp}(2k+2|2k) versus osp(2k+1∣2k)\mathfrak{osp}(2k+1|2k)

    未解决约 17 年
  6. Geometric underpinning of super duality for ortho-symplectic and related Lie superalgebras

    未解决约 16 年
11/811/8猜想8 个问题
  1. The SWF–Pin(2)-surjectivity conjecture for odd-type involutions on spin rational homology spheres

    未解决约 3 年
  2. Definite spin and E8E_8-boundings of homology 3-spheres: Tange's invariants ds\mathfrak{ds}, g8g_8, and the (11/8)-linked questions

    未解决约 12 年
  3. Manolescu's κ\kappa-invariant of Dehn surgeries on knots: the odd-odd case and the ±2\pm 2 ambiguity

    未解决约 2 年
  4. The 11/8-conjecture (Matsumoto): b2≥118∣σ∣b_2\ge\frac{11}{8}|\sigma| for closed smooth spin 4-manifolds

    未解决约 44 年
  5. Topological criteria for Floer KGK_G-split homology spheres and the K-theoretic route to the 11/8 conjecture

    未解决约 13 年
  6. Intersection-form constraints for spin 4-manifolds bounded by Seifert rational homology 3-spheres: extending the μˉ\bar\mu and κ\kappa inequalities to non-orientable bases and degenerate cobordisms

    未解决约 4 年
  7. Topologically but not smoothly H-slice knots in punctured connected sums of K3 surfaces for n ≥ 4 (Problem 4.26 of Konno–Miyazawa–Taniguchi)

    未解决约 4 年
  8. The 11/8-Conjecture for Closed Smooth Spin 4-Manifolds (Matsumoto's Conjecture)

    未解决约 44 年
2D2D瞬时频率4 个问题
  1. Statistical performance theory for the wavelet-domain monogenic AM/FM estimators of the Riesz–Laplace transform: bias and variance under noise and finite sampling

    未解决约 16 年
  2. Mathematical foundations of idempotent-generated multidimensional analytic signals: existence of extended Hilbert operators, necessity of multiplier idempotency conditions, and boundary-value structure

    未解决约 1 年
  3. Robust multicomponent AM-FM image demodulation: stability at energy-operator singularities, quantified accuracy beyond narrowband assumptions, and principled multiscale filterbank fusion

    未解决约 31 年
  4. Robust multiscale AM-FM demodulation and image reconstruction for real digital images: out-of-passband and low instantaneous frequencies, nonideal sampling, and principled filterbank selection

    未解决约 16 年
3n+13n+1猜想与复解析方法5 个问题
  1. The Collatz (3n+1) conjecture, equivalently the nonvanishing of the arrival coefficients in Masetti's iterative functional equation

    未解决约 55 年
  2. Fixed-point classification and orbit asymptotics for the Collatz operator T\mathcal{T}: the open problems of Neklyudov's functional-analytic approach

    未解决约 5 年
  3. Holomorphic solution spaces of the functional equations satisfied by generating functions of generalized Collatz dynamics

    未解决约 32 年
  4. Logical strength of the linear-operator necessary condition for the Collatz conjecture (Soileau's Fourier-average condition)

    未解决约 3 年
  5. The Collatz 3x−13x-1 problem (the 3n+13n+1 problem for negative start values): exactly three linearly independent holomorphic solutions of the Berg–Opfer functional equations

    未解决约 13 年
kk-服务器猜想3 个问题
  1. The Randomized Competitive Ratio of Weighted kk-Server on Uniform Metrics: Closing the Gap between Ω(2k)\Omega(2^k) and exp⁡(O(k2))\exp(O(k^2))

    未解决约 32 年
  2. The Harmonic k-server conjecture: is the Harmonic algorithm k(k+1)2\frac{k(k+1)}{2}-competitive on every metric space?

    未解决约 35 年
  3. The infinite-server problem across metric spaces: which spaces are competitive, and what is the competitive ratio on depth-D trees and layered graphs

    未解决约 9 年
P=NPP=NP?6 个问题
  1. P versus NP and the finite descriptive-complexity separations: NP versus co-NP (Σ11\Sigma^1_1 versus Π11\Pi^1_1) and P versus Δ11\Delta^1_1 over finite structures

    未解决约 55 年
  2. Fixed-Polynomial Circuit Lower Bounds for ⊕P\oplus P, Uniform MAMA, PNPP^{NP}, and NPNP

    未解决约 19 年
  3. Does the polynomial hierarchy collapse? (Is the polynomial-time hierarchy infinite?)

    未解决约 50 年
  4. Provability of P vs. NP in algorithmically verifiable mathematics (AV-mathematics)

    未解决约 23 年
  5. Open questions of the Verifier Trade-off Theorem: certificate-length versus verification-time trade-offs beyond deterministic worst-case verification

    未解决约 1 年
  6. NP versus BQP: is NP contained in bounded-error quantum polynomial time?

    未解决约 33 年
r=rωr=r_{\omega}?及s=sωs=s_{\omega}?6 个问题
  1. Weakly tight MAD families in the b<s\mathfrak{b}<\mathfrak{s} regime and Sacks indestructibility

  2. Splitting versus closed almost disjointness: does s=ℵ1\mathfrak{s} = \aleph_1, or at least sω=ℵ1\mathfrak{s}_\omega = \aleph_1, imply aclosed=ℵ1\mathfrak{a}_{closed} = \aleph_1?

  3. Existence of a completely separable MAD family in ZFC (the Erdős–Shelah problem)

  4. The dual-reaping number versus the pair-splitting number, and star-uniformity of Borel ideals versus the cofinality of the null ideal (Question 4.8 of Hrušák–Meza-Alcántara–Minami, 2010)

  5. Open boundary cases of the negative strong polarized partition relation: the sigma-reaping number under rσ=c\mathfrak{r}_\sigma=\mathfrak{c} and the real-valued measurable endpoint

  6. Is the dual reaping number rd\mathfrak{r}_d at most the pair-splitting number spair\mathfrak{s}_{\mathrm{pair}}?

3维流形上tight切触结构的分类5 个问题
  1. Existence of tight contact structures on closed hyperbolic 3-manifolds (the hyperbolic case of Eliashberg's tight-existence question)

    未解决约 34 年
  2. Classification of tight contact structures on the four-fiber Brieskorn spheres Σ(2,3,7,41)\Sigma(2,3,7,41) and Σ(2,3,11,13)\Sigma(2,3,11,13)

    未解决不足 1 年
  3. Tight contact structures on the Whitehead link surgery family M(n,r)M(n,r): classification beyond the resolved parameter range and universal tightness

    未解决约 2 年
  4. Complete classification of tight contact structures on the remaining surgeries on the figure-eight knot and Stein fillability of the Phi-counted structures

    未解决约 7 年
  5. General slice-Bennequin characterization of tight contact 3-manifolds and the tight stratum with vanishing Ozsváth–Szabó contact invariant (Hedden–Raoux)

    未解决约 5 年
4 维光滑庞加莱(Poincaré)猜想10 个问题
  1. Pochette surgery on the 4-sphere: homology-4-sphere outputs and exotic smooth structures (Suzuki–Tange Questions 5.1–5.5)

    未解决约 4 年
  2. Is the Gluck twist of S^4 about an arbitrary 2-knot diffeomorphic to S^4? (Kirby problem 4.23)

    未解决约 64 年
  3. Standardness of the extended Cappell–Shaneson homotopy 4-spheres and inequivalent smooth structures on the associated nonorientable 4-manifolds (Torres, 2026, Questions D–F)

    未解决约 50 年
  4. Standardness of Cappell-Shaneson homotopy 4-spheres: Gompf's conjecture on Cappell-Shaneson matrices

    未解决约 50 年
  5. Must a 3-manifold that embeds smoothly in a homotopy 4-sphere embed smoothly in the standard 4-sphere? (Budney-Burton, Question 8.3)

    未解决约 17 年
  6. Topologically but not smoothly integrally split 2-component links in S4S^4 (Golla–Marengon Questions 1.4 and 1.5)

    未解决约 2 年
  7. Generalized Property R Conjecture: handleslide equivalence of R-links to the unlink and the status of the generalized-square-knot families Lc/dp,qL^{p,q}_{c/d}

    未解决约 31 年
  8. Completing the PL classification of the census of closed orientable 4-manifold triangulations with up to six pentachora: the residual candidate PL classes for S4S^4, CP2\mathbb{C}P^2, and QS4(2)QS^4(2)

    未解决约 1 年
  9. Smooth unknottedness of turned 1-twist-spun tori and the Cochran–Davis torus in the 4-sphere

    未解决约 33 年
  10. Completing the group-trisection dictionary for smooth 4-manifolds: the homeomorphism equivalence relation, group-theoretic reductions of the smooth 4-dimensional Poincaré conjecture, and trisection genus versus exotic smooth structures

    未解决约 10 年
阿达马(Hadamard)矩阵存在性7 个问题
  1. Existence of periodic compatible binary sequences and circulant-core Hadamard matrices: the six conjectures of Orozco López (2018)

    未解决约 8 年
  2. Cryer's growth conjecture for Hadamard matrices: is the complete-pivoting growth factor ρ(H) equal to n?

    未解决约 58 年
  3. The Hadamard conjecture: existence of Hadamard matrices of every order 4m

    未解决约 133 年
  4. The circulant Hadamard conjecture and the possible orders of Hadamard matrices with one circulant core

    未解决约 63 年
  5. Hadamard matrices of the unresolved orders below 1000: the smallest open cases of the Hadamard and skew Hadamard conjectures

    未解决约 133 年
  6. The strong skew Hadamard conjecture: existence of skew Hadamard matrices of every order divisible by 4

    未解决约 55 年
  7. The Hadamard conjecture: existence of a Hadamard matrix of every order divisible by 4

    未解决约 133 年
阿蒂亚(Atiyah)猜想9 个问题
  1. The Weighted Atiyah Conjecture for Hecke–von Neumann algebras of Coxeter groups beyond the infinite dihedral group

    未解决约 14 年
  2. The pp-adic Atiyah question: integrality of pp-adic Betti numbers

    未解决约 7 年
  3. The center-valued Atiyah conjecture for congruence subgroups of SLn(Z)\mathrm{SL}_n(\mathbb{Z}) and their finite extensions

    未解决约 10 年
  4. Integrality of the rate of relations of a torsion-free finitely presented group: the first ℓ2\ell^2-Betti number case of the Atiyah conjecture

    未解决约 50 年
  5. Integrality of the von Neumann rank of ZΓ-modules for torsion-free amenable groups (Question 2.1 of Chung–Thom: the amenable case of Kaplansky's zero divisor conjecture and the strong Atiyah conjecture)

    未解决约 69 年
  6. Closure of the Strong Atiyah Conjecture under finite group extensions

    未解决约 22 年
  7. The strong Atiyah conjecture for groups with bounded torsion

    未解决约 33 年
  8. The range of L2L^2-Betti numbers of universal covers of finite CW-complexes

    未解决约 16 年
  9. The Atiyah problem for finitely presented groups and the lamplighter group: exact sets of ℓ2\ell^2-Betti values

    未解决约 16 年
阿诺德(Arnold)猜想9 个问题
  1. The degenerate Arnold conjecture on T2m×CPn\mathbb T^{2m}\times\mathbb{CP}^n: the cup-length bound 2m+n+12m+n+1 for arbitrary Hamiltonian diffeomorphisms

    未解决约 36 年
  2. Clifford symplectic pencils and the multi-time Arnold conjecture beyond flat targets

    未解决约 18 年
  3. Gong's two-point Gromov-Witten cup-length conjecture for degenerate symplectic fixed points (Conjecture 1.7 of arXiv:2507.04191)

    未解决约 1 年
  4. A C0C^0 Arnold-type criterion via spectral invariants (Question 3 of Buhovsky–Humilière–Seyfaddini)

    未解决约 9 年
  5. Viterbo's conjecture on the spectral norm of Lagrangians in cotangent bundles and the Arnold-type principle for Hausdorff limits of the zero section

    未解决约 18 年
  6. A pair-topology Arnold conjecture for bmb^m-symplectic manifolds in dimensions at least four

    未解决约 3 年
  7. The Arnold–Givental Lagrangian intersection estimate for the real part of a weighted projective space with not-all-odd weights

    未解决约 20 年
  8. Hypercontact Floer theory for general compact hyperkähler targets and the hyperkähler Arnold conjecture

    未解决约 18 年
  9. The strong Arnold conjecture: Morse-number lower bound for fixed points of Hamiltonian diffeomorphisms

    未解决约 61 年
阿廷(Artin)群的Gröbner-Shirshov基9 个问题
  1. Finite Gröbner–Shirshov bases for braid semigroups (positive Artin monoids)

    未解决约 23 年
  2. A uniform structural pattern for Gröbner–Shirshov bases of Coxeter groups of arbitrary type

    未解决约 25 年
  3. Gröbner–Shirshov bases for the affine non-crystallographic Coxeter groups

    未解决约 7 年
  4. Direct Composition–Diamond Lemma proofs for the Gröbner–Shirshov bases of Malcev-problem group embeddings

    未解决约 17 年
  5. Length-preserving geodesic rewriting for Artin groups with A3A_3 or B3B_3 subdiagrams: the rank-three types (2,3,3)(2,3,3) and (2,3,4)(2,3,4)

    未解决约 2 年
  6. Length-preserving rewriting for the word problem in Artin groups: the A_3/B_3 obstruction and the general case

    未解决约 1 年
  7. The Bokut–Fong–Ke–Shiao hypothesis on Gröbner–Shirshov bases for braid semigroups beyond type AnA_n

    未解决约 23 年
  8. The lattice conjecture for the left-division order on Krammer's asymmetric Artin monoid AnA_n (Conjecture 11.12 of ‘An asymmetric generalisation of Artin monoids’)

    未解决约 13 年
  9. Termination and ordering-dependence of Gröbner–Shirshov completion for Coxeter-group presentations

    未解决约 6 年
埃农(Hénon)映射族中奇异吸引子的存在性问题9 个问题
  1. Prevalence of uniform hyperbolicity at the first internal-tangency bifurcation of Hénon-like families

    未解决约 15 年
  2. Explicit constants and certified Jacobian thresholds for the finite-time renormalizability criteria in the Hénon family

    未解决约 1 年
  3. Newhouse's conjecture on the generic absence of SRB measures in the Hénon family

    未解决约 21 年
  4. The nature of the classical Hénon attractor at a=1.4a=1.4, b=0.3b=0.3: strange attractor or stable periodic orbit?

    未解决约 50 年
  5. Positive-measure coexistence of attractors in the classical Hénon family beyond the small-dissipation regime, with quantitative parameter-measure bounds

    未解决约 7 年
  6. Palis' parameter-measure conjecture versus the Berger phenomenon: infinitely many coexisting attractors for families of surface diffeomorphisms, and the regularity boundary of typical coexistence

    未解决约 33 年
  7. Homoclinic tangencies of every order in the Hénon family

    未解决约 20 年
  8. Constructive trapping domains and Smale-horseshoe conditions for the multidimensional Hénon map with general nonlinearity

    未解决约 3 年
  9. The remaining parameter gap in the Devaney–Nitecki conjecture: transversal homoclinic points of the area-preserving Hénon map for −1<a≤−1+10−7-1<a\le-1+10^{-7}

    未解决约 47 年
爱因斯坦(Einstein)场方程的数学研究6 个问题
  1. Generic past (and hence full) Cloc0,1C^{0,1}_{\mathrm{loc}}-inextendibility of the Dafermos–Luk–Oh spacetimes (two-ended spherically symmetric Einstein–Maxwell–scalar-field perturbations of Reissner–Nordström)

    未解决约 6 年
  2. Nonlinear stability of subextremal Kerr black holes for structureless initial data: removing the partial polyhomogeneity hypothesis

    未解决不足 1 年
  3. Generic W1,2W^{1,2}-inextendibility of the dynamical Kerr Cauchy horizon: Christodoulou's formulation of strong cosmic censorship for the Einstein vacuum equations without symmetry

    未解决约 18 年
  4. Strong cosmic censorship at the Wloc1,2W^{1,2}_{loc} level for nonlinearly perturbed Reissner–Nordström black holes without symmetry (Christodoulou's formulation)

    未解决约 18 年
  5. Low-regularity strong cosmic censorship: generic inextendibility of the maximal globally hyperbolic development as a weak solution of the Einstein equations

    未解决约 17 年
  6. Wloc1,2W^{1,2}_{\mathrm{loc}}-formulation of strong cosmic censorship in the spherically symmetric Einstein-Maxwell-real-scalar-field model: inextendibility of all nontrivial C0C^0 extensions for generic two-ended data

    未解决约 14 年
巴斯-奎伦(Bass-Quillen)猜想9 个问题
  1. Constructive Hermite rings conjecture and constructive Bass–Quillen conjecture for projective modules over polynomial rings (Lombardi–Quitté closing problem list)

    未解决约 53 年
  2. Extending the Bass–Quillen property to non-Noetherian regular coherent bases

    未解决约 50 年
  3. The Bass–Quillen conjecture for torsors under totally isotropic reductive group schemes in mixed characteristic

    未解决约 53 年
  4. Quillen's conjecture QnQ_n: are all projective modules over the localization of a regular local ring at a regular parameter free?

    未解决约 50 年
  5. Bass–Quillen for ramified mixed-characteristic test rings R/(p−b)R/(p-b) (Popescu's Question 6)

    未解决约 53 年
  6. Homotopy invariance of Euler class groups over finite fields and the top Chow-group comparison in characteristic 2 (Das's Questions 7.10 and 1.4)

    未解决约 7 年
  7. Bass–Quillen conjecture for regular local rings of ramified mixed characteristic

    未解决约 53 年
  8. Generalized Bass–Quillen conjecture: extension of Zariski-locally trivial torsors under strictly isotropic reductive groups over regular rings

    未解决约 53 年
  9. The rank-r≥2r\ge 2 case of the non-archimedean analytic Bass–Quillen question of Kerz–Saito–Tamme (Question 3)

    未解决约 10 年
巴斯(Bass)猜想和索尔(Soule)猜想9 个问题
  1. The Beilinson–Soulé vanishing conjecture and Soulé's conjecture on the order of vanishing of zeta functions of arithmetic schemes, via cyclic higher Chow groups

    未解决约 43 年
  2. The Burghelea conjecture: vanishing of T∗(x,Q)T_*(x,\mathbb{Q}) for groups whose classifying space is a finite CW-complex

    未解决约 40 年
  3. The Weil-étale cohomological formula for ord⁡s=0ζ(X,s)\operatorname{ord}_{s=0}\zeta(\mathcal{X},s) and ζ∗(X,0)\zeta^*(\mathcal{X},0) for regular arithmetic schemes (Morin's Conjecture 4.2 and its conjectural inputs)

    未解决约 15 年
  4. Soulé's conjectured logarithmic bound for torsion in the K-theory of rings of integers

    未解决约 23 年
  5. Uniform torsion bounds for homology of arithmetic and S-arithmetic lattices and Soulé's conjecture on torsion in the K-theory of rings of integers

    未解决约 23 年
  6. The L2L^2-Brown formula E(G)(s)=χ(2)(CG(s))E(G)(s)=\chi^{(2)}(C_G(s)) for groups of type FP over C\mathbb{C} (Chatterji–Mislin Conjecture 1) and the scope of the class B∞\mathcal{B}_\infty

    未解决约 44 年
  7. The Bass–Quillen conjecture: are all finitely generated projective modules over a polynomial ring with regular base extended from the base (the mixed-characteristic case)?

    未解决约 53 年
  8. Bass's finiteness conjecture for K0K_0 of regular rings finitely generated over Z\mathbb{Z}

    未解决约 53 年
  9. The Bost conjecture: is the ℓ1\ell^1-assembly map an isomorphism for every countable discrete group?

    未解决约 35 年
并闭集猜想6 个问题
  1. The UC_x ladder for Frankl's union-closed conjecture: Bouchard's subfamily-existence Question 2.2 and implication Question 2.5

    未解决约 2 年
  2. Single-letterization, computability, and reach of the entropy-coupling bound for the union-closed sets conjecture

    未解决约 3 年
  3. Optimal two-element frequency constants for finite union-closed families (Question 1 of Hu–Shi–Zhou)

    未解决约 47 年
  4. Sawin's coupling question for the entropy approach to Frankl's union-closed sets conjecture

    未解决约 3 年
  5. Lexicographic initial segments as extremal non-FC families: Pulaj–Wood's Conjecture 1 on the threshold FC(k,n)FC(k,n)

    未解决约 3 年
  6. Frankl's union-closed sets conjecture for families of intermediate height number

    未解决约 47 年
波雷尔(Borel)猜想:非球面性闭流形之间的同伦等价必同伦于一个同胚6 个问题
  1. Simple connectivity at infinity and the smooth type of the universal Davis covers of the exotic aspherical 4-manifolds

    未解决约 1 年
  2. Goodness of hyperbolic and CAT(0)-groups and the Borel conjecture in dimension four

    未解决约 44 年
  3. Goodness of amenable groups and the Disc Embedding Conjecture for 4-manifolds beyond elementary amenable fundamental groups

    未解决约 1 年
  4. The Borel conjecture for higher graph manifolds in dimensions below six and for non-trivial bundle pieces

    未解决约 11 年
  5. Cancellable elements and unique decomposition for connected sums of closed manifolds in dimensions at least 4

    未解决约 7 年
  6. The transfinite decomposition rank of the direct sum of iterated wreath products of the integers

    未解决约 16 年
波利亚(Pólya)猜测9 个问题
  1. Pólya's conjecture for Dirichlet eigenvalues and its Ku–Ku–Tang generalization to the poly-Laplacian: pointwise Weyl-constant lower bounds on arbitrary bounded domains

    未解决约 72 年
  2. Existence of a small-area threshold for Pólya's conjecture on the infinite cylinder S^1 × R (Freitas–Wang Conjecture 1.1)

    未解决约 1 年
  3. Pólya's conjecture for the Dirichlet Laplacian on multiply connected planar domains beyond concentric annuli

    未解决约 65 年
  4. Pólya's conjecture for Dirichlet eigenvalues of the Laplacian on bounded Euclidean domains, and its poly-Laplacian generalization

    未解决约 65 年
  5. The Pólya conjecture for Dirichlet eigenvalues of the Laplacian on arbitrary bounded Euclidean domains

    未解决约 65 年
  6. Pólya–Szegö polygonal Faber–Krahn conjecture: does the regular N-gon minimize the first Dirichlet eigenvalue among N-gons of given area?

    未解决约 74 年
  7. Pólya's conjecture in Liouville quantum gravity: an almost-sure uniform bound on the eigenvalue counting function of Liouville Brownian motion

    未解决约 3 年
  8. Pólya's conjecture for spherical n-lunes: the exact threshold p*(n) and the spectra of rational lunes

    未解决不足 1 年
  9. Pólya's conjecture for products (0,1)×Ω(0,1)\times\Omega with an interval factor and arbitrary bounded cross-section Ω\Omega

    未解决约 72 年
玻尔兹曼(Boltzmann)方程的流体动力学极限7 个问题
  1. Global-in-time validity of the diffusive expansion of the Boltzmann equation for flow past an obstacle with non-zero passing flow and large data

    未解决约 1 年
  2. Compressible Euler limit from the Boltzmann equation in a half-space with partial-accommodation Maxwell boundary condition

    未解决约 5 年
  3. Steady hydrodynamic limit of the Boltzmann equation with Maxwell reflection: rigorous derivation of the compressible Navier-Stokes-Fourier system with Coron-Aoki slip boundary conditions in a channel

    未解决约 37 年
  4. Simultaneous hydrodynamic limit and long-time stability for the Boltzmann equation with non-isothermal Maxwell boundary conditions

    未解决不足 1 年
  5. Rigorous hydrodynamic limit of the homo-energetic Boltzmann equation of objective molecular dynamics: from the scaled kinetic equation to the reduced Euler and Navier-Stokes ODEs with validated viscosity

    未解决约 3 年
  6. Higher-order Hilbert expansion and the Maxwell-molecule limit for Boltzmann uniform shear flow with hard potentials

    未解决约 3 年
  7. Non-truncated Knudsen boundary layer with geometric correction and non-zero tangential velocity in the Hilbert expansion of the Boltzmann equation on a two-dimensional disk with specular reflection

    未解决约 1 年
玻尔兹曼(Boltzmann)方程的Boltzmann-Grad极限10 个问题
  1. Long-time Boltzmann–Grad limit for short-range potential gases and quantitative sharpening of the Deng–Hani–Ma theorem

    未解决约 2 年
  2. Rigorous global-in-time derivation of the Boltzmann equation from the finite-NN BBGKY hierarchy in polynomially weighted L∞L^\infty spaces

    未解决约 2 年
  3. Validity of the Boltzmann equation beyond short-range, repulsive, whole-space dynamics: the Pulvirenti–Saffirio–Simonella open problems (long-range interactions, constructive rates for attractive potentials, and bounded domains)

    未解决约 12 年
  4. Classification of limiting dynamics in the Boltzmann-Grad limit of hard-sphere gases from the microscopic correlation structure of the initial data

    未解决约 9 年
  5. Long-time convergence to the fluctuating Boltzmann equation for a two-dimensional hard-disk gas at equilibrium, and extension to time windows growing with the mean free path

    未解决约 4 年
  6. Fluctuation theory and dynamical large deviations in the Boltzmann–Grad limit beyond short times, regular paths, and hard-sphere interactions

    未解决约 6 年
  7. Optimal convergence rate and time of validity for Lanford's theorem in the half-space with specular reflection

    未解决约 5 年
  8. Boltzmann-Grad derivation for a hard-sphere gas in a bounded domain with thermal boundary conditions: general domains, Maxwell re-emission, and stationary states with prescribed wall temperature

    未解决约 5 年
  9. Global validity of the Boltzmann equation under the initial smoothness ordering in the Boltzmann–Grad limit of the Master kinetic equation

    未解决约 9 年
  10. Open extensions of Hilbert's sixth-problem program: long-time Newton-to-Boltzmann-to-fluid derivation in dimensions d≥4d\geq 4, longer time windows, and interactions beyond hard spheres

    未解决约 1 年
博克纳-里斯(Bochner-Riesz)乘子问题8 个问题
  1. Tao's maximal Bochner–Riesz conjecture for 1≤p<21\le p<2: almost everywhere convergence of Bochner–Riesz means at the critical order

    未解决约 28 年
  2. The α=12\alpha=\tfrac12 endpoint for negative-order Bochner–Riesz multipliers on the subspace of functions whose Fourier transform vanishes on the sphere

    未解决约 11 年
  3. Sharp boundary of sparse domination for planar Bochner–Riesz multipliers: the critical endpoint and top side of the sparse trapezoid

    未解决约 9 年
  4. The reverse Littlewood–Paley inequality for the sphere in dimensions n≥3n\ge 3

    未解决约 11 年
  5. The Bochner–Riesz multiplier conjecture in Rn\mathbb{R}^n for n≥3n\ge3

    未解决约 90 年
  6. Bilinear Bochner–Riesz means: the δ=0\delta=0 bilinear disc multiplier in one dimension and the L2×L∞→L2L^2\times L^\infty\to L^2 smoothness threshold in higher dimensions

    未解决约 20 年
  7. Sharp Bochner–Riesz summability thresholds beyond single-singularity models: polygonal domains and multi-cone surfaces, and scaling-critical magnetic Schrödinger operators in dimensions n≥3n\ge3

    未解决约 2 年
  8. The Bochner–Riesz conjecture in dimensions d≥3d\ge 3: sharp LpL^p-boundedness of the Bochner–Riesz means and the equivalent uniform local decay estimate

    未解决约 90 年
不可压缩纳维耶-斯托克斯(Navier-Stokes)方程6 个问题
  1. Global regularity versus finite-time blowup for the three-dimensional axisymmetric incompressible Navier–Stokes equations with swirl

    未解决约 58 年
  2. Global regularity versus finite-time blowup for the three-dimensional incompressible Navier-Stokes equations with arbitrary large data in the critical space BMO−1(R3)BMO^{-1}(\mathbb{R}^3)

    未解决约 92 年
  3. Inviscid limit of the three-dimensional inhomogeneous incompressible Navier–Stokes equations without the Kolmogorov spectral hypothesis

    未解决约 14 年
  4. Global regularity of Leray–Hopf weak solutions of the three-dimensional incompressible Navier–Stokes equations (Clay Millennium existence and smoothness problem)

    未解决约 92 年
  5. Global-in-time validity of the diffusive expansion of the Boltzmann equation for flow past an obstacle with non-zero passing flow and large initial data

    未解决约 1 年
  6. Global regularity of the 3D Navier–Stokes equations on R3\mathbb{R}^3 with ill-prepared, slowly varying initial data analytic in the vertical variable

    未解决约 11 年
布朗(Brown)问题8 个问题
  1. Does connected-graded-as-an-algebra imply connected-as-a-coalgebra for Hopf algebras, and the associated Nakayama, Ore, and Weyl-skew-field questions of Brown–Gilmartin–Zhang

    未解决约 10 年
  2. The Brown–Goodearl question: is every noetherian Hopf algebra Artin–Schelter Gorenstein?

    未解决约 28 年
  3. Skryabin's conjecture: is the antipode of every noetherian Hopf algebra bijective?

    未解决约 19 年
  4. Does connected graded as an algebra imply connected as a coalgebra for Hopf algebras of finite Gel'fand–Kirillov dimension (Brown–Gilmartin–Zhang Question 0.4)?

    未解决约 10 年
  5. The Brown–Goodearl questions for general noetherian weak Hopf algebras: finite injective dimension, homogeneous decomposition, and bijectivity of the antipode (Rogalski–Won–Zhang Questions 8.1–8.3)

    未解决约 29 年
  6. AS-Gorenstein descent to quantum homogeneous spaces of Hopf algebras (Liu–Wu Question 4.7) and companion descent questions

    未解决约 14 年
  7. The Brown–Goodearl question: is every noetherian affine Hopf algebra Artin–Schelter Gorenstein?

    未解决约 28 年
  8. Is every noetherian Hopf algebra Artin–Schelter Gorenstein? (the Brown–Goodearl Gorenstein question)

    未解决约 28 年
布伦南(Brennan)猜测9 个问题
  1. Brennan's conjecture: LsL^s-integrability of the derivative of a conformal map for 4/3<s<44/3<s<4, equivalently boundedness of the induced composition operators on homogeneous Sobolev spaces

    未解决约 47 年
  2. Brennan's integrability conjecture for the basin of infinity of general monic polynomials

    未解决约 47 年
  3. Brennan's conjecture: integrability of the derivative of a conformal map and the universal integral means spectrum at exponent −2-2

    未解决约 47 年
  4. Brennan's conjecture on the LpL^p-integrability of the derivative of a conformal map and the simple-fraction expansion route

    未解决约 47 年
  5. Exact values and extremal functions of the universal integral means spectrum for complex exponents (the Kraetzer, Binder, and Brennan conjectures)

    未解决约 47 年
  6. Brennan's conjecture: integrability of the derivative of conformal maps (B(−2)=1B(-2)=1)

    未解决约 48 年
  7. The generalized Brennan conjecture: sharp global integrability of derivatives of quasiconformal mappings onto the disk

    未解决约 47 年
  8. The semigroup-fication route to Brennan's conjecture: approximating conformal maps by holomorphic semigroups with derivative-integrability control

    未解决约 1 年
  9. Circular Brennan conjecture: the universal integral means spectrum on the circle ∣t∣=2|t|=2

    未解决约 39 年
布洛克(Bloch)常数7 个问题
  1. Exact values of the Bloch constants Bk(M)B_k(M) and Bloc(M)B_{\mathrm{loc}}(M) for holomorphic mappings on the unit ball of Cn\mathbb{C}^n

    未解决约 18 年
  2. Bloch constant and sharp one-variable-type constants for holomorphic mappings on unit balls of infinite-dimensional Banach spaces beyond the radial form F(x)=f(x)xF(x)=f(x)x

    未解决约 2 年
  3. Optimal Bloch constants for Bochner (K,K′)(K,K')-mappings and (K,K′)(K,K')-quasiregular mappings in the unit ball of Cn\mathbb{C}^n

    未解决约 75 年
  4. Exact value of the univalent Bloch–Landau constant UU

    未解决约 96 年
  5. Sharpness of the Bloch-type ratio bound for quasiregular pluriharmonic mappings on homogeneous unit balls

    未解决约 4 年
  6. Exact value of the Bloch constants for planar harmonic mappings

    未解决约 26 年
  7. Exact values of the classical Bloch constant BB and the Landau constant LL

    未解决约 97 年
布如意(Broué)交换亏群猜想10 个问题
  1. Broué's abelian defect group conjecture over a complete discrete valuation ring for spin blocks of double covers of symmetric groups

    未解决约 36 年
  2. Splendid Rickard equivalences for 2-blocks with abelian defect groups of order at most 32: the splendid form of Broué's Abelian Defect Group Conjecture in this range

    未解决约 5 年
  3. The Kessar–Linckelmann refinement of Broué's abelian defect group conjecture: splendid Rickard equivalences over arbitrary complete discrete valuation rings

    未解决约 9 年
  4. The strengthened Broué abelian defect group conjecture: splendid Rickard equivalence over arbitrary complete discrete valuation rings

    未解决约 9 年
  5. The Kessar–Linckelmann refinement of Broué's abelian defect group conjecture over arbitrary p-modular systems

    未解决约 9 年
  6. The p=2p=2 case of the multiplicity-free solvability criterion for HH1\mathrm{HH}^1 of blocks with abelian defect groups (Linckelmann–Wang, 2025)

    未解决约 1 年
  7. Choosing the Broué abelian-defect equivalence to satisfy pointwise character-degree inequalities

    未解决约 1 年
  8. Broué's Abelian Defect Group Conjecture in Full Generality

    未解决约 36 年
  9. Broué's abelian defect group conjecture for arbitrary finite groups and its missing reduction to quasi-simple groups

    未解决约 36 年
  10. Broué's abelian defect group conjecture and the lifting of isotypies to p-permutation equivalences

    未解决约 36 年
差分代数簇的不可约分解9 个问题
  1. Finite decomposition of P[σ]-perfect ideals into P[σ]-prime ideals

    未解决约 10 年
  2. Complexity bounds for the Ritt–Wu characteristic-set zero-decomposition of ordinary difference polynomial systems

    未解决约 17 年
  3. Merging difference resolvent chains into a single one-variable ascending chain

    未解决约 20 年
  4. Completing the structure theory of toric difference varieties: σ-torus classification, the orbit–face correspondence beyond face-saturated semimodules, and the Chow–resultant identity beyond transformally essential supports

    未解决约 10 年
  5. Difference Chow varieties: existence of a parameter-space theory and the missing structural theory of the difference Chow form

    未解决约 13 年
  6. Binomiality of the radical well-mixed closure of a binomial difference ideal

    未解决约 9 年
  7. Deciding strong irreducibility of differential–difference chains and constructing reflexive prime decompositions of perfect differential–difference ideals

    未解决约 17 年
  8. Deciding strong irreducibility of difference ascending chains and computing reflexive prime decompositions of perfect difference ideals

    未解决约 17 年
  9. Deciding strong irreducibility of difference ascending chains and primeness of difference saturation ideals

    未解决约 18 年
常微分方程与随机分析中的相关问题6 个问题
  1. Well-posedness by noise for SDEs and stochastic transport equations with random Hölder drift (Flandoli–Gubinelli–Priola's random-drift problem)

    未解决约 18 年
  2. Classification of transcendental meromorphic solutions of fn+Pd(z,f)=p1eα1(z)+p2eα2(z)f^n + P_d(z,f) = p_1e^{\alpha_1(z)} + p_2e^{\alpha_2(z)} in the critical case d=n−1d = n-1

    未解决约 15 年
  3. Strong solutions and regularity for multidimensional SDEs with random and unbounded drifts

    未解决约 7 年
  4. Krylov's conjecture: existence of strong solutions of Itô equations with a small parabolic-Morrey drift and an L2L^2-in-time bounded drift component

    未解决不足 1 年
  5. Pathwise uniqueness for Itô SDEs with drift in the endpoint Krylov–Röckner class Lt2Lx∞L^2_t L^\infty_x

    未解决约 21 年
  6. Sharp uniqueness threshold and minimal solution regularity for ordinary differential equations with singular coefficients

    未解决约 17 年
超紧基数典型内模型问题7 个问题
  1. Is the Chang transfer (ℵω+1,ℵω)↠(ω2,ω1)(\aleph_{\omega+1},\aleph_\omega)\twoheadrightarrow(\omega_2,\omega_1) consistent?

  2. Sargsyan's closing questions on HOD-supercompactness: Global Universality for embeddings of HOD and HOD covering above a supercompact cardinal

  3. Is the Ultrapower Axiom consistent with an extendible cardinal? (Goldberg's Conjecture 2.1.8)

  4. The inner model problem for a supercompact cardinal — the motivating open problem of the two-cardinal ineffability principles ITP/ISP

  5. Woodin's Ω-Conjecture: completeness of Ω-logic under a proper class of Woodin cardinals

  6. Is the Ultrapower Axiom consistent with a supercompact cardinal?

  7. Woodin's Ultimate-LL Conjecture: existence of a weakly Σ2\Sigma_2-definable weak extender model for supercompactness satisfying V=Ultimate-LV=\text{Ultimate-}L

大数分解是否有多项式算法?9 个问题
  1. Rigorous complexity analysis of QAOA-assisted Schnorr lattice factoring with sublinear quantum resources

    未解决约 3 年
  2. Efficient random search for residue prime sets with small modular deviation (Assumption 1 of the sub-million-qubit quantum factoring estimate)

    未解决约 1 年
  3. Smooth-relation yield and the required lattice dimension in Schnorr-style (CVP-based) integer factoring

    未解决约 35 年
  4. Removing the Riemann hypothesis from the equivalence of integer factoring and elliptic-curve point counting modulo N

    未解决约 28 年
  5. Viable fac-relation generation for Schnorr's lattice-based factoring: approximate CVP beyond Babai versus the smoothness barrier

    未解决约 3 年
  6. Unconditional deterministic polynomial-time factorization of integers given Euler's totient function (Problem 1.1 of Hittmeir-Pomykała, 2020)

    未解决约 49 年
  7. The Strong (α,β)-Divisor Conjecture of Umans and Wang: structured sets S, T whose difference set contains a multiple of every integer in [n], with α, β < 1/2

    未解决不足 1 年
  8. Resource scaling and viability of Schnorr-type lattice factoring with variational quantum local search

    未解决约 3 年
  9. Optimal iteration maps and a rigorous random-map analysis for the parallel Pollard rho method

    未解决约 1 年
带通量的弦真空和紧化与广义复几何5 个问题
  1. Flux-complete extension of the Lau–Tseng–Yau non-Kähler SYZ mirror correspondence: H-flux, non-invariant forms, and the passage beyond the semi-flat regime

    未解决约 12 年
  2. Calibration interpretation of the pairing equations in two-dimensional type II vacua: extending the supersymmetry-calibrations correspondence

    未解决约 12 年
  3. Completeness of the classification of Minkowski flux vacua of type II supergravities with parallel Op/DpO_p/D_p sources

    未解决约 10 年
  4. Fate of the O(α')-exact heterotic flux vacua at second order in α'

    未解决约 12 年
  5. Moduli of generic SU(7)\mathrm{SU}(7) flux backgrounds in exceptional generalised geometry: localised sources, stability, and smoothness of the physical moduli space

    未解决约 6 年
带指数函数的实数理论的可判定性问题7 个问题
  1. The Transfer Conjecture for EXP-fields: is every o-minimal exponential field satisfying exp' = exp elementarily equivalent to the real exponential field?

  2. Decidability of the Zero Problem for Exponential Polynomials (the Continuous Skolem Problem)

  3. Transfer Conjecture for o-minimal exponential fields: unconditional elementary equivalence with Rexp⁡\mathbb{R}_{\exp} and embedding of the prime model

  4. Unconditional completeness, polynomial boundedness, and residue-field models of the definably complete exponential theories Texp⁡dcT^{dc}_{\exp} and TedcT^{dc}_{\mathrm{e}}

  5. Unconditional decidability of equality of exponential polynomials in π\pi (over R\mathbb{R}) and in π\pi and ii (over C\mathbb{C})

  6. Natural exponentially transcendental numbers and the decidability of the real field expanded by a natural irrational power function

  7. Unconditional decidability of the real exponential field and the Igusa–Knight–Schweber General Theorem over the dyadic-interval structure Rint\mathcal{R}_{int}

单向函数的存在性9 个问题
  1. Errorless versus two-sided-error average-case hardness of MKtP: the Liu–Pass gap between EXP ≠ BPP and one-way functions

    未解决约 5 年
  2. Exact cryptographic strength of polynomial-time samplable dimension-gap distributions: are they equivalent to one-way functions?

    未解决约 1 年
  3. Injective one-way functions on the reals: existence of a partial computable one-way injection under Levin's definition

    未解决约 2 年
  4. Worst-case to average-case reductions for time-bounded Kolmogorov complexity against heuristics that may err

    未解决约 8 年
  5. Existence of an injective partial computable one-way function on the reals (Levin's range-side formulation)

    未解决约 1 年
  6. Computational hardness needed for quantum cryptography: the unresolved complexity status of EFI pairs

    未解决约 3 年
  7. Constructing a length-preserving 1-1 one-way function from the intractability of factoring, and simpler weak-to-strong amplification: the open problems of Goldreich, Levin, and Nisan

    未解决约 31 年
  8. Do Worst-Case Complexity Separations Imply One-Way Functions? (Impagliazzo's Heuristica-Pessiland Question)

    未解决约 31 年
  9. Bijective polynomial-time enumeration of languages in P and the D-classes of regular elements of the semigroup fP

    未解决约 13 年

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