Mathematics
Open problems, research attempts and community review.
Provisional editorial order for Top Open Problems: Millennium Prize Problems first, followed by assessed difficulty tiers; the unassessed remainder keeps its previous catalogue order. About rankings
Browse by subject
Search this collection by problem ID, title, classification, subject, provider, or model.
Search results
No matching problems. Try another search or clear a filter.
6,288 records · Search and filter
- Math-5001 Computation at Scale
- Math-5002 Computational Duality
- Math-5003 Occam's Razor in Many Dimensions
- Math-5004 10 Lectures and 42 Open Problems — Open Problem 3.3
- Math-5005 10 Lectures and 42 Open Problems — Certifying the Restricted Isometry Property
- Math-5006 10 Lectures and 42 Open Problems — Angular Synchronization via Projected Power Method
- Math-5007 3.10 (Futer, Schleimer) — A practical 3-manifold homeomorphism algorithm
- Math-5008 5.8 (Schleimer) — Why SnapPy works in practice
- Math-5009 A malformed composite record and an Artin--Schreier certificate family
- Math-5010 Source repair and a sharp quadratic specialization theorem
- Math-5011 Exact ridge reduction for Lévy PIDEs
- Math-5012 Nuisance-adjusted information for semiparametric MRS design
- Math-5013 Bellman residuals, policy performance, and coverage
- Math-5014 A finite-sample Rao-Blackwell diagnostic between Kalman and particle filtering
- Math-5015 Exact support and trace-controlled ellipsoidal reachability
- Math-5016 From an approximate HJB value to implemented control
- Math-5017 Certified weak-coupling tubes for structured reachability
- Math-5018 Finite-switch implementation of chattering controls
- Math-5019 An intrinsic-dimension certificate for projected Hamilton--Jacobi equations
- Math-5020 Coordinate-covariant orientation laws for no-trade regions
- Math-5021 When frequency selectivity can and cannot improve multi-user capacity
- Math-5022 What is actually exponential in single-carrier equalization?
- Math-5023 Degree-two-and-three Markov basis for the Birkhoff ranking model
- Math-5024 Indispensable cubics and a five-move Markov basis on the zero-middle-row face
- Math-5025 Two fixed odds ratios form a line segment, with a complete boundary audit
- Math-5026 A binary-collapse-invisible likelihood face
- Math-5027 Exact endpoint and stability census for the symmetric triangle
- Math-5028 Sufficient releases, conditional fibers, and incompatible Gibbs updates
- Math-5029 Exact cumulant ideal of the normalized binary four-cycle
- Math-5030 BIC evidence, mixture singularities, and an exact quotient diagnostic
- Math-5031 Algebraic fibers and sharp sets for missing categorical data
- Math-5032 Determinantal certificates for safe categorical collapse before multiple imputation
- Math-5033 A zero-dimensional parity independence variety
- Math-5034 Behrens–Fisher likelihood equations and an equal-scatter bifurcation
- Math-5035 Semialgebraic stratification of maximum likelihood
- Math-5036 Vertex flattenings generate the phylogenetic ideal
- Math-5037 The stochastic image of a binary phylogenetic tripod
- Math-5038 Generator-invariant local efficacy for phylogenetic invariants
- Math-5039 A joint tree and JC69/K80 selector with a finite-sample certificate
- Math-5040 A precise probabilistic repair and algebraic criteria for interval cell spectra
- Math-5041 An ancestral-observation certificate for likelihood unimodality
- Math-5042 A support-aware exchange between levels and binary variables
- Math-5043 When flattening and symmetry-aware collapse are informative
- Math-5044 Algebraic certificates for nonparametric mixture likelihood
- Math-5045 A four-point counterexample and the border-basis repair
- Math-5046 An exact witness and certificate for a recorded negative answer
- Math-5047 Localization and Fourier coordinates beyond polynomial models
- Math-5048 Gaussian conditional independence as an algebraic minor
- Math-5049 Two-sided novelty certificates for sparse binomial output
- Math-5050 A scale-normalized robustness criterion for algebraic design fans