Disciplines / Research questions
数学
247 个研究主题 · 1651 个问题
黎曼(Riemann)函数在奇正整数点处值的超越性10 个问题
Determining the -dimension of the span of : linear independence of odd zeta values
未解决约 48 年Is Apéry's constant transcendental, and are and algebraically independent?
未解决约 47 年Irrationality of odd zeta values: is ζ(5) irrational, and how many of ζ(3), ζ(5), …, ζ(s) are irrational?
未解决约 47 年The Sondow–Zlobin conjecture on triangle integrals: prove that is never a rational multiple of for any integer
未解决约 19 年Irrationality of
未解决约 47 年Irrationality of the Riemann zeta values at odd integers: is ζ(s) irrational for any fixed odd s ≥ 5?
未解决约 48 年Arithmetic nature of the odd Riemann zeta values: irrationality of for
未解决约 47 年Closed forms for odd zeta values: whether is a rational multiple of
未解决约 47 年Improving the lower bound for the number of irrational odd zeta values
未解决约 24 年Irrationality of individual odd zeta values: is ζ(5) irrational?
未解决约 48 年
黎曼(Riemann)猜想6 个问题
Open analytical questions for Voros's discretized Keiper–Li sequence: transseries asymptotics, all- positivity, and remainder bounds
未解决约 9 年The zeta spiral on the critical line: denseness of the values of in and the unconditional curvature sign
未解决约 16 年The Alternative Hypothesis for zeta-zero pairs: determinacy of the limiting densities p_{k/2} under AH-Pairs alone
未解决约 30 年The missing direction of the Soundararajan and Radziwiłł equivalence between small gaps of zeros of the Riemann zeta-function and the horizontal distribution of zeros of ζ′(s), and the conjectured small-v asymptotics of m(v) and m′(v)
未解决约 28 年Denseness of the values of on the critical line: the remaining case of the Bohr–Courant value-distribution problem
未解决约 112 年Unconditional discrete second moments of the Riemann zeta-function along polynomial shifts: closing the abscissa gap to the line
未解决约 6 年
李代数及其对偶空间的幂零元的分类7 个问题
The normal-form map versus the Kazhdan–Lusztig map, and the even-depth analogue of the minimal reducing subalgebra theorem for nilpotent elements
未解决约 5 年Canonical forms for coadjoint orbits of maximal unipotent subgroups: Surkov's Conjecture 3.8 for root systems beyond G_2 and F_4
未解决约 1 年General classification of nilpotent orbits in real graded semisimple Lie algebras: completing the real carrier-algebra programme
未解决约 12 年Classification of coadjoint orbits of maximal dimension for Borel nilradicals in types , and
未解决约 64 年Nilpotent orbit finiteness, separability, and Howe's conjecture for non-split reductive groups over local fields of positive characteristic
未解决约 10 年Spaltenstein's conjecture: every stabiliser sheet of a reductive Lie algebra contains a unique nilpotent orbit, in arbitrary characteristic
未解决约 44 年Coincidence of the two Springer correspondences for the dual of a classical Lie algebra in characteristic 2 (Xue's Remark 5.19 expectation)
未解决约 16 年
李群表示的分歧律5 个问题
Packet-level multiplicity-one for the branching of to beyond regular parameters, small-rank signatures, and a Gross–Prasad-type law for non-tempered packets
未解决约 7 年Classification of the triples with admissible restriction of a discrete series representation to an embedded
未解决约 8 年Finite multiplicity of the continuous spectrum in discrete series branching laws: a per-representation criterion and the finite-infinite boundary for symmetric pairs beyond the real-spherical class
未解决约 13 年Kobayashi's conjecture on admissible restrictions: does -admissibility imply -admissibility?
未解决约 26 年Blattner-type multiplicity formula for discretely decomposable restrictions of Zuckerman modules to symmetric subgroups (Ørsted–Speh conjecture)
未解决约 18 年
李群酉表示的分类8 个问题
Positive energy versus semiboundedness for irreducible unitary representations of full hermitian Lie groups
未解决约 15 年The unitary duals of the complex exceptional simple Lie groups , , , and
未解决约 37 年General super imprimitivity theorem: Mackey induction and systems of imprimitivity for super homogeneous spaces with odd directions
未解决约 21 年Unitary dual of Drinfeld doubles of q-deformations of compact semisimple Lie groups beyond the almost-real regime
未解决约 10 年The Salamanca-Riba–Vogan unitarily-small infinitesimal-character conjecture for real reductive groups beyond
未解决约 27 年Structural theory of the FS-scattered part of the Dirac series for real exceptional Lie groups: u-small K-types, unipotent representations, and cancellation in the Dirac index
未解决约 6 年Making the FPP description of the unitary dual of real reductive groups algorithmically effective
未解决约 3 年Algebraic constructions of first-reduction-point and exceptional unitary highest weight modules
未解决约 3 年
里德-所罗门(Reed-Solomon)码的译码问题7 个问题
Hardware realization of quasi-linear FFT-based Reed–Solomon decoders (the modular-approach MA/FDMA/FMA family)
未解决约 4 年Low-complexity algebraic soft-decision decoding of Reed–Solomon codes: closing the performance–complexity gap of Koetter–Vardy decoding
未解决约 22 年Combinatorial List-Size Classification of Linearized Reed–Solomon Codes Across All Sum-Rank Parameter Regimes
未解决约 5 年Efficient decoding, list-decodability, and dual insdel distance of Reed–Solomon codes under insertion–deletion errors
未解决约 6 年Efficient list-decoding of Reed-Solomon codes at the generalized Singleton radius, and efficient certification of optimal list-decodability
未解决约 6 年Explicit Reed–Solomon codes achieving capacity-level list-decodability over small fields
未解决约 5 年Proximity gaps for Reed–Solomon codes above the Johnson radius: list- and line-decodability over prime fields up to the Elias radius
未解决约 6 年
连续统势确定问题5 个问题
Consistency strength of the higher Solovay configuration at singular cardinals of countable cofinality: measurability of in and the -perfect set property
Woodin's Ω Conjecture: completeness of Ω-logic under a proper class of Woodin cardinals
Optimal large-cardinal strength for blowing up the power of a singular cardinal of uncountable cofinality that is singular in the core model
Optimal hypotheses for Easton's theorem at measurable and strong cardinals
The Revision Hypothesis: must every limit cardinal be a revision cardinal?
量子层猜想7 个问题
Bound states of the Dirichlet Laplacian in the Fichera layer and generalized Fichera layers: exact counts
未解决约 8 年Geometric characterization of the discrete spectrum of quantum layers and their nonsmooth analogues: bound states, thickness uniformity, and the converse problem
未解决约 25 年Discrete spectrum of curved quantum layers: the Lu–Rowlett open problems on uniform thin-layer existence, the positive-total-Gauss-curvature domination inequality, and the thick-layer dichotomy
未解决约 14 年Empty discrete spectrum of generalized quantum tubes: the converse problem beyond thin layers and surfaces
未解决约 20 年Width-uniform existence of bound states in hard-wall quantum layers over finite-total-curvature surfaces
未解决约 19 年Curvature-induced bound states in quantum layers over non-parabolic hypersurfaces in dimensions four and higher
未解决约 14 年The quantum layer conjecture: bound states in hard-wall layers over nonplanar asymptotically flat surfaces with finite total curvature
未解决约 25 年
量子极小模型猜测7 个问题
Invariance and decomposition of quantum cohomology under flips and birational maps between minimal models
未解决约 27 年Reduction conjecture for arbitrary smooth GIT quotients and quantum D-module decomposition for arbitrary standard flips
未解决约 3 年Effective computation of quantum cohomology across conifold transitions: a blow-up formula along Weil divisors
未解决约 11 年Does blowing up a Fano manifold along a smooth Fano center strictly increase the spectral radius of quantum multiplication by the first Chern class (Conjecture 1.1 of Hu–Ke–Li–Song)?
未解决约 2 年Globalizing the quantum-flips F-embedding: big quantum cohomology under general global simple (r,r′) flips
未解决约 6 年Establish the -equivariant noncommutative minimal model program: quasi-convergent paths of equivariant stability conditions from the equivariant quantum differential equation
未解决约 3 年Blow-up compatibility of reflection vectors in quantum cohomology: convergence of the quantum cohomology of Bl(X) and the reflection-vector property for pullbacks of exceptional objects
未解决约 3 年
量子杨-米尔斯(Yang-Mills)千禧问题4 个问题
Extending the provable area-law regime for lattice Yang-Mills: the linear-in-N ('t Hooft) regime with uniform string tension, and fixed small N at large coupling
未解决约 52 年Deconfinement for trivial-center lattice Yang–Mills in the strong-coupling regime and mass-gap criteria beyond the Bakry–Émery approach
未解决约 47 年Deconfinement of trivial-center lattice Yang-Mills theories: uniform perimeter law for all strong-coupling beta, extensions to SO(2N+1) and general representations, the weak-coupling regime, and the large-N reconciliation
未解决约 47 年Yang–Mills existence and mass gap: a fully quantized, background-independent four-dimensional theory with a gauge-invariant positive mass gap
未解决约 26 年
列表染色猜想9 个问题
The List Equitable Total Coloring Conjecture
未解决约 8 年Enumerative chromatic-choosability of joins with complete graphs (the enumerative Ohba conjecture of Allred and Mudrock)
未解决约 1 年The Proportional Choice Number of Complete Bipartite and Complete Multipartite Graphs: Exact Value, Classification, and Asymptotics
未解决约 6 年Is every line graph -choosable?
未解决约 50 年Generalized Ohba conjecture for r-uniform hypergraphs: chromatic-choosability at high chromatic number
未解决约 8 年The List Coloring Conjecture: is the list chromatic index of every multigraph equal to its chromatic index?
未解决约 51 年List and correspondence colouring reconfiguration conjectures: optimal diameters and
未解决约 4 年Paintability of balanced complete multipartite graphs with parts of size three: is for every , and what is ?
未解决约 14 年Open problems on the λ-choosability of planar graph families from Zhu's refinement of choosability
未解决约 7 年
六维球面上复结构的存在性问题6 个问题
Integrability of the Clifford-induced almost complex structure on level hypersurfaces of OT-FKM isoparametric families
未解决约 4 年The Hopf problem in generalized geometry: existence of an integrable generalized complex structure on the six-sphere
未解决约 2 年Hopf's problem: does the six-sphere admit a complex structure?
未解决约 79 年Vanishing and Chern-class constraints for compact complex threefolds with and holomorphic algebraic reduction in full generality
未解决约 28 年Complex-structure rigidity without the Kähler hypothesis for the two exceptional flag manifolds and
未解决约 6 年A necessary-and-sufficient curvature characterization of integrability of almost complex structures
未解决约 11 年
旅行商问题是否存在性能比小于 1.5 的近似算法7 个问题
Is the integrality gap of the subtour-elimination LP for the metric s-t path TSP exactly 3/2?
未解决约 10 年A 3/2-Approximation for Prize-Collecting TSP and a Black-Box Reduction from TSP to PCTSP
未解决约 3 年The exact integrality ratio of the Held-Karp relaxation for the metric s-t path TSP
未解决约 14 年The 4/3 conjecture for the integrality gap of the subtour elimination relaxation of the metric traveling salesman problem
未解决约 46 年The 4/3-Conjecture for the Integrality Gap of the Subtour (Held–Karp) Relaxation of the Metric Traveling Salesman Problem
未解决约 36 年Schalekamp–Williamson–van Zuylen conjecture: is the integrality gap of the subtour LP attained on half-integral vertices?
The integrality ratio of the standard LP relaxation for the metric s-t-path TSP
未解决约 14 年
旅行售货员问题7 个问题
The exact integrality ratio of the Held-Karp (subtour) LP relaxation for the metric s-t path TSP
未解决约 35 年Computational Complexity of the Symmetric Circulant Traveling Salesman Problem
未解决约 41 年The four-thirds conjecture for the subtour elimination relaxation of the metric traveling salesman problem and the existence of a 4/3-approximation algorithm
未解决约 36 年Determining the Beardwood–Halton–Hammersley constant for the random Euclidean traveling salesman problem: improving the rigorous lower bound 0.6277 and closing the gap to the upper bound 0.90367
未解决约 66 年Is the integrality gap of the subtour LP for metric TSP attained on half-integral vertices? (Schalekamp–Williamson–van Zuylen conjecture)
未解决约 13 年Constant-Factor Approximability of the Traveling Salesman Problem with Line Neighborhoods in
未解决约 13 年Complexity of the Euclidean TSP with neighborhoods: optimal tours for rays in the plane and approximation for lines in 3-dimensional space
未解决约 14 年
罗林(Rohlin)问题8 个问题
Rokhlin's multiple mixing problem: does mixing imply mixing of all orders for measure-preserving automorphisms?
未解决约 77 年Does exponential mixing imply multiple exponential mixing for smooth measure-preserving systems? (Problem 5.2 of Dolgopyat–Dong–Kanigowski–Nándori)
未解决约 6 年Rohlin's multiple mixing problem for -actions: does mixing imply mixing of all orders?
未解决约 77 年Is the weak Ratner property an isomorphism invariant for measure-preserving flows?
未解决约 16 年Open problems in the rigidity theory of actions with extreme deviation from multiple mixing
未解决约 8 年The Rohlin problem: does mixing imply mixing of all orders for measure-preserving -actions?
未解决约 77 年Non-trivial pairwise-independent 3-fold self-joinings of zero-entropy mixing stationary processes
未解决约 39 年Rohlin's problem: does strong mixing imply mixing of all orders for measure-preserving -actions?
未解决约 77 年
罗塔-巴克斯特(Rota-Baxter)代数中的几个问题5 个问题
Realizing subgroups as images of Rota–Baxter operators on groups: the free-group instance (Kourovka Notebook Problem 20.124) and Rota–Baxter operators on free non-abelian groups
未解决约 5 年A polarized classical Yang–Baxter equation for matching Rota–Baxter Lie algebras of weight zero
未解决约 6 年Extended double shuffle completeness and Zagier's dimension conjecture for multiple zeta values
未解决约 32 年Rota-Baxter indices of upper-triangular and semisimple matrix algebras and the derived-algebra nilpotency bound for
未解决约 8 年Restricted post-Lie structures induced by tridendriform algebras in prime characteristic
未解决不足 1 年
满足正规子群极小条件的可解群的Fitting子群是否是幂零的?3 个问题
没有对称性的非线性椭圆型方程无穷多个解的存在性7 个问题
Geometric uniformity of minimizing tiled deformations for non-symmetric elliptic equations: extending the Bahri–Lions multiplicity theorem to arbitrary bounded smooth domains
未解决约 37 年Infinitely many solutions of the Dirichlet -Laplacian with nonzero boundary data throughout the subcritical range
未解决约 28 年Persistence of infinitely many solutions for the perturbed elliptic system , in the full subcritical range (Salvatore's open problems)
未解决约 16 年Broken-symmetry multiplicity for superlinear elliptic Dirichlet problems: the Bahri–Lions conjecture on general domains
未解决约 37 年Sharp thresholds for infinitely many solutions of quasilinear equations perturbed from symmetry
未解决约 12 年Extending the network-gluing construction of finite-energy solutions with trivial symmetry group to non-even nonlinearities and higher dimensions
未解决约 12 年Infinitely many solutions for the superlinear Dirichlet problem with fixed inhomogeneous data in G-invariant domains: the full subcritical range
未解决约 37 年
模代数smash积的半素性10 个问题
Semiprimeness transfer to smash products of weak Hopf algebra actions: beyond the involutive, PI, finite-action case
未解决约 40 年Does H-semiprimeness imply semiprimeness for PI-algebras acted on by finite-dimensional semisimple Hopf algebras in positive characteristic?
未解决约 19 年The Cohen–Fishman question: is the smash product of a semisimple Hopf algebra with a semiprime module algebra always semiprime?
未解决约 40 年Prime and semiprime smash products for finite-dimensional pointed Hopf algebras beyond quantum linear spaces
未解决约 6 年Semiprimitivity and semiprimality of partial smash products: the general partial-action analogue of the Cohen–Fishman–Linchenko–Montgomery question
未解决约 10 年Unconditional semiprimality and semiprimitivity transfer for partial smash products of semisimple Hopf algebra actions
未解决约 10 年Prime and semiprime smash products for finite-dimensional pointed Hopf algebra actions beyond quantum linear spaces
未解决约 7 年Classifying finite-dimensional Hopf algebras whose actions force a nilpotent Jacobson radical on invariant rings
未解决约 8 年Intrinsic criteria for equality of the graded and ordinary Jacobson radical of finite groupoid graded algebras beyond trace invertibility
未解决约 7 年The Cohen–Fischman semiprime smash product question and Jacobson-radical stability for Hopf actions on PI-algebras
未解决约 40 年
模李代数模表示论中的卡茨-Weisfeiler(Kac-Weisfeiler)猜想8 个问题
The super Kac-Weisfeiler divisibility property for the strange classical Lie superalgebras and
未解决约 18 年Super Kac–Weisfeiler divisibility for arbitrary restricted Lie superalgebras: irreducible module dimensions, the maximal-locus statement, and support-variety refinements
未解决约 18 年The first Kac–Weisfeiler conjecture for restricted Lie algebras and the index of algebras with isomorphic enveloping algebras
未解决约 55 年Tikaradze's Kac–Weisfeiler-type conjecture for filtered algebras in positive characteristic:
未解决约 16 年The second Kac-Weisfeiler divisibility conjecture for truncated current Lie algebras
未解决约 55 年Effective thresholds for the first Kac–Weisfeiler conjecture in large characteristics and the Frobenius-characterisation conjecture for arbitrary restricted Lie algebras
未解决约 55 年Super first Kac–Weisfeiler conjecture for finite-dimensional restricted Lie superalgebras
未解决约 55 年Minimal-dimensional representations of finite -superalgebras and attainability of the super Kac–Weisfeiler bounds (Zeng–Shu Conjecture 0.3)
未解决约 11 年
拟线性双曲型方程组由特征向量引发的奇性6 个问题
No shock formation for totally linearly degenerate quasilinear hyperbolic systems: the conjecture beyond block-structured classes
未解决约 42 年Majda's no-shock conjecture for one-dimensional linearly degenerate quasilinear hyperbolic systems: ODE-type amplitude blowup versus shock formation
未解决约 42 年Majda's conjecture: ODE-type singularity for linearly degenerate quasilinear hyperbolic systems
未解决约 42 年Majda's conjecture: ODE-type singularity formation for one-dimensional quasilinear hyperbolic systems with linearly degenerate characteristic fields
未解决约 42 年Global regularity versus finite-time singularity formation in linearly degenerate dissipative relativistic fluid models
未解决约 2 年Spectral-data regularity and normalized coordinates for quasilinear hyperbolic systems with non-constant characteristic multiplicity
未解决约 19 年
纽结的交叉点数的计算和可加性7 个问题
Additivity of the crossing number of knots under connected sum (Tait's problem; Kirby Problem 1.65)
未解决约 149 年The satellite crossing number conjecture
未解决约 30 年Additivity of the triple-crossing number under connected sum and sharpness of the genus lower bound
未解决约 6 年Constancy of the quadratic Jones-slope coefficient functions in the colored Jones degree quasipolynomials of a knot
未解决约 5 年Monotonicity of the crossing spectrum of knots and the additivity threshold for multi-crossing numbers
未解决约 12 年Additivity of the crossing number under connected sum of knots
未解决约 31 年Completing the restricted-Reidemeister-move route to crossing-number additivity: robust diagram invariants and a topological interpretation of the restricted move set (Weinstein 2025, Questions 1-2)
未解决不足 1 年
纽结的解结数的计算和可加性6 个问题
The band-unknotting number of the double twist knots
未解决不足 1 年The unknotting number of the knot : deciding between and
未解决不足 1 年Does the unknotting number of a connected sum of knots grow with the number of summands?
未解决约 49 年Exact unknotting numbers of the connected sums of two-strand torus knots with their mirrors, and exact Reidemeister move counts for unlinking
未解决约 15 年Quasi-additivity of the Delta-unknotting number, a strand-independent braid-knot constant, and primality of knots with Delta-unknotting number one
未解决不足 1 年How badly unknotting number fails to be additive under connected sum: the max bound, universally additive knots, and the exact value of
未解决约 1 年
欧拉常数的超越性10 个问题
Apéry-type rational approximations to Euler's constant: a second-order homogeneous recurrence construction, or integer linear forms in 1 and γ of better-than-sub-exponential quality
未解决约 47 年Is Euler's constant a value of an arithmetic Gevrey series? Membership of in the rings , and
未解决约 3 年The arithmetic nature of the Euler–Gompertz constant: irrationality and transcendence of
未解决约 58 年Irrationality and arithmetic nature of the Euler–Mascheroni constant
未解决约 126 年Arithmetic nature of the linear combinations of the Euler–Mascheroni and Euler–Gompertz constants for
未解决约 292 年Arithmetic nature of the non-trivial zeros of the Riemann zeta function and of their power sums at algebraic arguments
未解决约 8 年Unconditional algebraic independence of the logarithmic parts of generalized Euler–Briggs constants (removing the Weak Schanuel hypothesis in Gun–Murty–Saha)
未解决约 10 年Occurrence of the exceptional algebraic generalized Euler–Briggs constant in the families of Gun–Saha–Sinha
未解决约 16 年Erdős's conjecture on the non-vanishing of for -valued periodic functions (Erdősian functions)
未解决约 61 年Determine the arithmetic nature of generalized Euler–Kronecker constants of number fields (algebraic or transcendental)
未解决约 295 年
欧拉方程整体弱解的适定性问题8 个问题
Beyond the Yudovich class for the 2D Euler equations: propagating localized instability to full non-uniqueness of unforced weak solutions, Gevrey-type well-posedness, and the self-similar structure of the algebraic singularity
未解决约 39 年Existence of global energy-admissible weak solutions of the incompressible Euler equations for arbitrary initial data in the energy space
未解决约 15 年Uniqueness versus non-uniqueness for the 2D incompressible Euler equations with vorticity in , (the Yudovich gap)
未解决约 39 年Well-posedness of the 2D Euler equations with bounded, non-decaying planar vorticity: uniqueness of Yudovich-type limits beyond symmetry and far-field prescriptions
未解决约 9 年Existence of energy-admissible global weak solutions to the incompressible Euler equations for arbitrary initial data
未解决约 15 年Existence of invariant measures for the 2D stochastic Euler equations driven by linear multiplicative noise on a bounded domain
未解决约 3 年Well-posedness of the two-dimensional Euler equations with merely bounded vorticity in wide planar sectors and general unbounded domains (the Caprino–Marchioro one-point Green-function conjecture)
未解决约 17 年Uniqueness for the two-dimensional incompressible Euler equations with unbounded vorticity
未解决约 63 年
庞加莱(Poincaré)圆盘上调和映射的舍恩(Schoen)猜想4 个问题
Finite non-transversality of positive maps into flag varieties for general Guichard–Wienhard positive structures
未解决不足 1 年Harmonic diffeomorphisms between Euclidean and hyperbolic model spaces: the open non-symmetric and higher-dimensional cases of Schoen's problem
未解决约 33 年Nonvanishing of the Jacobian for harmonic quasiconformal mappings in dimensions (Problem 7.3 of Todorčević, 2019)
未解决约 11 年Nonexistence of harmonic diffeomorphisms from the disk onto a complete parabolic plane (Mazet–Rodríguez–Rosenberg conjecture)
未解决约 10 年
彭罗斯(Penrose)猜想6 个问题
The Penrose inequality for general (non-time-symmetric) asymptotically flat initial data sets
未解决约 52 年The sharp Penrose inequality for asymptotically (locally) hyperbolic initial data
未解决约 27 年Penrose inequality and positive mass theorem under averaged dominant energy conditions beyond spherical symmetry
未解决约 1 年Extremal Reissner–Nordström–Tangherlini rigidity at equality in the charged positive mass inequality for higher-dimensional black-hole initial data
未解决约 12 年The Penrose inequality for general asymptotically flat initial data sets beyond the 2-convexity condition
未解决约 53 年Lower bounds for black hole area in terms of mass, charge, and angular momentum: minimal enclosing area, multiple black holes, and rigidity
未解决约 13 年
平面向量场不变曲线次数的庞加莱(Poincaré)问题5 个问题
Divergent separatrices of holomorphic foliations on the complex projective plane with a unique singular point: an explicit saddle-node example and rigorous divergence for the Alcántara–Mozo-Fernández nilpotent family
未解决约 3 年Characterizing when the index–Diophantine strategy bounds the degrees of algebraic solutions of non-degenerate polynomial differential equations
未解决约 8 年Realizability of the pure algebraic multiplicity and topological invariance of the algebraic multiplicity for dicritical foliation germs (Genzmer–Mol's open questions)
未解决约 10 年The algebraic-critical case of the Poincaré problem: which local algebraic solutions extend to global invariant algebraic curves
未解决约 21 年Genus-one rational first integrals and intrinsic dicritical bounds in the effective Poincaré problem for foliations of the projective plane
未解决约 14 年
齐性爱因斯坦(Einstein)流形8 个问题
Splitting of complete negative Einstein manifolds with cocompact connected Lie group symmetry: Conjecture 1.1 of Böhm–Lafuente without unimodularity
未解决约 3 年The Böhm–Lafuente splitting conjecture for negative Einstein manifolds with cocompact isometric symmetry
未解决约 3 年Which compact homogeneous spaces admit an invariant Einstein metric: completing the topological existence criteria of Wang–Ziller, Böhm, and Graev
未解决约 40 年Globke–Nikolayevsky conjecture: every compact pseudo-Riemannian Einstein solvmanifold is a nilmanifold
未解决约 9 年The dynamical Alekseevskii conjecture in dimensions six and above
未解决约 9 年Which nilpotent Lie algebras are Einstein nilradicals? (Lauret–Will Problem 3 and the positive-graph question)
未解决约 20 年The Böhm–Wang–Ziller Finiteness Conjecture: finiteness of invariant Einstein metrics on compact homogeneous spaces
未解决约 22 年Finiteness of the moduli space of invariant Einstein metrics on a compact homogeneous space
未解决约 22 年
奇点解消7 个问题
Extension of the idealistic filtration resolution algorithm to ambient dimension 4 and above in positive characteristic (Kawanoue–Matsuki)
未解决约 14 年Resolution of the monomial case of the Idealistic Filtration Program in positive characteristic in dimension four and higher
未解决约 11 年Gluing local resolutions into a global resolution over perfect fields, and geometric resolution of singular moduli spaces (open problems from Hu's 'Grassmannians and Singularities')
未解决约 62 年Canonical resolution of singularities in positive and mixed characteristic via cobordant blow-ups at weighted centers
未解决约 4 年Embedded resolution of singularities in positive characteristic: stability of the residual order under permissible blowups and the existence of a terminating resolution invariant
未解决约 62 年Forced point centers and the residual-order cycle obstruction to resolution of singularities in positive characteristic
未解决约 8 年Canonical functorial resolution of singularities in positive characteristic: extending McQuillan's characteristic-zero invariant beyond equicharacteristic zero
未解决约 61 年
奇异基数问题4 个问题
Consistency strength of Ord-long strictly increasing iterates of Shelah's pcf operator
Class-many strong limit singular cardinals with in ZFC (Garti's Conjecture 3.4 on weak diamond and pcf theory)
Stationary reflection with the failure of SCH at a singular cardinal of uncountable cofinality without supercompactness
The residual program for Shelah's approachability ideal at successors of singular cardinals: uniform non-approachability, global failure of SCH and approachability, Woodin's AP-versus-SCH question, and the Tree Property at every successor of a singular (Jakob-Poveda, Questions 5.1-5.4)
嵌入猜想9 个问题
An explicit counterexample to Connes' embedding conjecture: a concretely presented type II factor not embedding into an ultrapower of the hyperfinite factor
未解决约 6 年The GNRS conjecture for minor-excluding graph families: the planar embedding and -sum conjectures
未解决约 27 年Strong embeddings of 3-connected cubic planar graphs on surfaces of negative Euler characteristic
未解决约 2 年The Dèbes–Deschamps conjecture: regular Galois solvability of finite split embedding problems over for an arbitrary field
未解决约 29 年Abhyankar–Sathaye embedding conjecture for hypersurfaces in affine space
未解决约 52 年The planar embedding conjecture: constant-distortion embeddings of planar graph metrics into
未解决约 26 年Regularity of the left-Garside category LD+ and the Embedding Conjecture for free left-self-distributive systems
未解决约 17 年The convex greedy embedding conjecture for 3-connected planar graphs and the Tutte spring-weight question
未解决约 22 年Existence of the enforceable II factor
未解决约 9 年
求解无界区域非线性偏微分方程的人工边界方法7 个问题
Explicit time-step bounds and Padé artificial-boundary-condition modeling error for the nonlinear time-fractional Burgers equation on unbounded domains
未解决约 5 年Higher-order, multi-dimensional fast discretizations with exact fractional artificial boundary conditions for the time-fractional Schrödinger equation on unbounded domains
未解决约 9 年Pressure-type artificial boundary conditions for steady Navier-Stokes flows in pipe systems beyond the small-data regime
未解决约 19 年Higher-order diagonal Padé nonlinear absorbing boundary conditions for nonlinear time-fractional parabolic problems on unbounded domains
未解决约 10 年Efficient and provably stable numerical realization of exact artificial boundary conditions for heat equations with nonlinear boundary conditions on unbounded domains
未解决约 19 年Stability, error, and convergence analysis of the artificial boundary method for the two-dimensional Burgers equation on unbounded domains
未解决约 18 年Discrete error estimates and higher-order-in-time boundary discretizations for the artificial-boundary finite difference scheme for nonlinear Schrödinger equations on unbounded domains
未解决约 8 年
求解线性代数方程组的最优方法6 个问题
Convergence of AdaRBFGS: adaptive randomized BFGS matrix inversion with iterate-dependent sketching
未解决约 10 年Truly linear working space and the bit-time frontier for rational linear-system solvers with entrywise multiplicative guarantees
未解决约 1 年Certified construction of Lagrange-principle optimal recovery methods for finite-dimensional linear systems: the general mixed-constraint case
未解决约 19 年The Time Complexity of Solving Dense Linear Systems with k Large Singular Values: Logarithmic Factors, Matrix-Multiplication Dependence, and Derandomization
未解决约 2 年Parameter selection for the HSS preconditioner: transfer of condition-number-balancing estimates from the HSS iteration and matrix-free parameter estimation
未解决约 10 年Stochastic preconditioning: designing the reformulation parameters (B, D) to minimize the condition number zeta(A, B, D) in stochastic reformulations of linear systems
未解决约 9 年
球和代数区域的刚性6 个问题
Sharp degree bounds for rational proper holomorphic maps between balls: the D'Angelo conjecture and the classification of valid quadruples (n, r, d, k)
未解决约 37 年Sharp degree bounds for rational proper maps between balls of maximal geometric rank: sharpness at minimal target dimension and the above-minimal regime (Problem (D))
未解决约 33 年Rigidity of proper holomorphic maps between unit balls with non-compact symmetry at low Hölder boundary regularity
未解决约 25 年D'Angelo's degree conjecture for rational proper holomorphic maps between complex unit balls: unresolved regimes beyond the third gap interval
未解决约 33 年Group data versus map data for rational proper maps of balls: detection of map invariants from the associated symmetry groups
未解决约 9 年Classifying local orthogonal pairs and generalized Huang equations between hyperquadrics at the borderline dimension
未解决约 2 年
球极函数的提升Pieri型公式7 个问题
Affine Pieri rule for periodic Macdonald spherical functions of the excluded twisted type , and identification of the deformed fusion ring with deformed Verlinde algebras
未解决约 4 年Schur positivity of the -Macdonald polynomials and the positive -character expansion of the Macdonald series
未解决约 3 年Mixed-type twisted Pieri formulas for Jack polynomials
未解决约 5 年Explicit Pieri formulas for Macdonald spherical functions and polynomials beyond small dominant weights
未解决约 23 年Twisted Pieri formulas beyond type : extensions to -type root systems, -Macdonald polynomials, and elliptic analogues
未解决约 6 年Factorized product forms for the Pieri-type coefficients of nonsymmetric Macdonald polynomials and the effective choice of the reduction index
未解决约 16 年A Pieri-type multiplication rule for spherical functions: Bravi–Gandini Conjecture 1.1 for spherical pairs of type A (including F4/Spin(9)) and the Hermitian symmetric cases of types B, C, BC
未解决约 5 年