Catalogue overview
Explore the listed problems by year, subject, model and reported evidence.
Counts describe this catalogue, not model success rates. Select a bar to see its records. Status and model counts can overlap.
Records by year
Year of the reported event; ranges use their final year.
Reported evidence
A record can have more than one status.
Models and AI systems
A record can credit several systems.
Mathematical subjects
A record can belong to several subjects.
All records
153 records- A bound of 43 for integers using at most two distinct digits across bases (OEIS A306424)2026 · Research
- A divisibility criterion for primes with primitive root 2 (OEIS A091669)2026 · Research
- A harmonic-number formula for a recurrence sequence (OEIS A227582)2026 · Research
- A polynomial coefficient formula for cubed central binomial coefficients (OEIS A002897)2026 · Research
- A recurrence for the middle column of Rule 167 (OEIS A267581)2026 · Research
- An integer eighth root of an Apéry determinant series (OEIS A228143)2026 · Research
- An ordinal Ramsey relation at ω^(ω²) (Erdős #591)2026 · Research
- Anderson’s quasi-completeness problem2026 · Research
- Anti-Ramsey numbers for paths and cycles (Erdős #1105)2026 · Research
- Approximation hardness of the closest vector problem2026 · Research
- Arithmetic complexity of the permanent2026 · Research
- Asymptotic counts for a restricted married-couple seating problem (OEIS A258667)2026 · Research
- Asymptotic counts of subsets with integer averages (OEIS A051293)2026 · Research
- Asymptotic size of binary codes2026 · Research
- Asymptotic sphere-packing density2026 · Research
- Berlekamp’s temperature bound for Domineering2026 · Research
- Bounded mass property on the Hopf threefold2026 · Research
- Bounded prime gaps of 246, Lean formalization2026 · Research
- Bounding the size of multiplicative bases (OEIS A194806)2026 · Research
- Catalan’s constant: disputed AI-assisted irrationality proof2026 · Research
- Characterizing Carmichael numbers by squarefree denominators (OEIS A309132)2026 · Research
- Collatz: an invalid machine-checked disproof2026 · Research
- Colouring unit-distance graphs with large girth (Erdős #705)2026 · Research
- Complex structure on the six-sphere: contested AI-assisted claim2026 · Research
- Connes’s rigidity conjecture2026 · Research
- Continued-fraction denominators are prime or one (OEIS A363102)2026 · Research
- Convergence of rational approximations to e (OEIS A340737)2026 · Research
- Counting divisor blocks with bounded ratios (OEIS A237271)2026 · Research
- Counting integer sequences with restricted rises (OEIS A028859)2026 · Research
- Covering planar sets by finitely many sets with no three collinear points (Erdős #846)2026 · Research
- Cycle double cover conjecture2026 · Research
- Daykin–Frankl conjecture for convex subsets of the Boolean lattice2026 · Research
- Density of multiples of shifted sequences with divergent reciprocal sums (Erdős #26)2026 · Research
- Density of sums of integers with restricted base-3 and base-4 digits (Erdős #125)2026 · Research
- Digit restrictions in signed sums of powers (OEIS A243106)2026 · Research
- Dimension-free weak-type bound for the vector Riesz transform2026 · Research
- Discrepancy of fractional parts of scaled integer sequences (Erdős #992)2026 · Research
- Distinct distances from multiple selected points (Erdős #652)2026 · Research
- Distinct distances when no four points lie on a circle (Erdős #654)2026 · Research
- Distinct fractional parts of reciprocal Catalan sums (OEIS A000108)2026 · Research
- Divisibility between products of factorials (Erdős #728)2026 · Research
- Divisibility of a factorial ratio by 30n − 1 (OEIS A211417)2026 · Research
- Do miniF2F formal statements match the problems?2022–2025 · Research
- Ehrhart’s volume conjecture2026 · Research
- Equal products of distinct central binomial coefficients (Erdős #397)2026 · Research
- Erdős #1196: primitive sets of large integers2026 · Research
- Erdős #1217: divisibility chains2026 · Research
- Erdős #146: extremal compactness2026 · Research
- Erdős #164: primitive set conjecture2026 · Research
- Erdős #180: extremal degeneracy2026 · Research
- Erdős #183: multicolour triangle Ramsey numbers2026 · Research
- Erdős unit-distance problem2026 · Research
- Erdős–Szemerédi sum-product conjecture over the reals2026 · Research
- Erdős–Sós tree-embedding conjecture, benchmark formulation (Erdős2026 · Research
- Error bounds for a nested-floor sequence (OEIS A341254)2026 · Research
- Eventual periodicity of indexed prime factors in a coupled recurrence (OEIS A382590)2026 · Research
- Existence of a non-sofic group2026 · Research
- Farhi–Goldstone–Gutmann QAOA conjecture2026 · Research
- Feige’s small-deviation conjecture2026 · Research
- Fermat's Last Theorem, end-to-end Lean formalization2026 · Research
- Few distances overall, but at least three among every four points (Erdős #659)2026 · Research
- Fewer multiplications for 4 × 4 matrices2022–2025 · Research
- Fibonacci values in a fourth-order recurrence (OEIS A103311)2026 · Research
- Finite-time singularity for smooth three-dimensional Euler flow2026 · Research
- First open case of the big-line-big-clique conjecture2026 · Research
- Forcing distinct distances in high dimensions (Erdős #1089)2026 · Research
- FrontierMath evaluation integrity2024–2026 · Research
- Gradient-descent step-size bounds and novelty2025 · Research
- Growing gaps between van der Waerden numbers (Erdős #138)2026 · Research
- Hamiltonian decompositions of directed toroidal grids2026 · Research
- Han’s conjecture on Hochschild homology2026 · Research
- Heil–Ramanathan–Topiwala conjecture2026 · Research
- Heyting algebras as subterminal lattices of elementary toposes2026 · Research
- Hyperbolic surfaces with large systoles in every large genus2026 · Research
- Implications between small magma laws2024–2025 · Research
- Improved record lower bound for large prime gaps (Erdős2026 · Research
- Integrality of a factorial ratio (OEIS A368692)2026 · Research
- Irrationality of reciprocal products in fast-growing sequences (Erdős #1051)2026 · Research
- Is a finite free group scheme killed by its order?2026 · Research
- Isolated sums in Sidon sets (Erdős #152)2026 · Research
- Jacobian conjecture in characteristic zero2026 · Research
- Knot signature bounds from hyperbolic geometry2021 · Research
- Kourovka 18.50: Number of distinct permuted products2026 · Research
- Kourovka 19.25: Simplicity from group order and totient sum2026 · Research
- Kourovka 20.125: Surjective Rota–Baxter operators2026 · Research
- Kourovka 21.147: Right-relatively convex subgroup lattices2026 · Research
- Kourovka 21.150: Rank bound for p-group extensions2026 · Research
- Kourovka 21.24: Cograph power graphs and chordality2026 · Research
- Kourovka 21.29: Common neighbours in generalized Saxl graphs2026 · Research
- Kourovka 21.8: Groups generated by class transpositions2026 · Research
- Kourovka 3.46: Number of maximal locally soluble normal subgroups2026 · Research
- Köthe conjecture via Krempa's matrix formulation2026 · Research
- Large cap sets in eight dimensions2023 · Research
- Majority optimality in correlation distillation with erasures2025 · Research
- McKean's entropy-production monotonicity question for the Boltzmann equation2026 · Research
- Minimizers in Gamow's liquid drop model2026 · Research
- Modular periodicity of a factorial-weighted binomial sum (OEIS A278070)2026 · Research
- Navier–Stokes existence and smoothness, forced finite-time blowup2026 · Research
- Nevanlinna's three-omitted-values question in a half-plane2026 · Research
- No negative-one power residues for absolute Euler pseudoprimes (OEIS A307865)2026 · Research
- Non-Calkin unital Banach algebras2026 · Research
- Nonintegrality of weighted binomial sums (OEIS A175386)2026 · Research
- Odd coefficients occur only at products of consecutive integers (OEIS A323557)2026 · Research
- Odd squares as XORs of consecutive squares (OEIS A224515)2026 · Research
- Odd terms occur only at products of consecutive integers (OEIS A325046)2026 · Research
- P versus NP: a disputed proof attempt2023 · Research
- Parallel repetition for quantum games2026 · Research
- Parity of k-differentials in genus zero and one2026 · Research
- Partitions into distinct non-squarefree integers beyond 23 (OEIS A256012)2026 · Research
- Periods of powers with prime exponents modulo an integer (OEIS A282779)2026 · Research
- Polynomial sublevel areas and logarithmic capacity (Erdős #1040)2026 · Research
- Power-law bounds for sets avoiding divisibility by pair sums (Erdős #12)2026 · Research
- Powerful parts of products of consecutive integers (Erdős #935)2026 · Research
- Presentation of the absolute Galois group of Q₂2026 · Research
- Primariness of Lp(L1)2026 · Research
- Primes congruent to ±1 modulo 10 as continued-fraction denominators (OEIS A363347)2026 · Research
- Proportion of zeta zeros on the critical line2026 · Research
- Quantum-oracle separation between QMA(2) and QMA2026 · Research
- Reflection symmetry in cumulative digit-sum comparisons (OEIS A289411)2026 · Research
- Run lengths in the second binary digit of Tribonacci numbers (OEIS A271591)2026 · Research
- Saturated Newton polytopes of Vandermonde powers2026 · Research
- Sendov’s conjecture2026 · Research
- Sharp thin-shell variance bound for log-concave distributions2026 · Research
- Single-minus gluon tree amplitudes2026 · Research
- Smallest multiples with divisible digit reversals (OEIS A062567)2026 · Research
- Smallest prime factor 1399 outside three exceptional cases (OEIS A248802)2026 · Research
- Smallest prime factor 67 along an index progression (OEIS A248802)2026 · Research
- Smooth counterexample to the Trautman conjecture2026 · Research
- Sparse additive bases for sets of density zero (Erdős #333)2026 · Research
- Sphere-packing optimality in dimensions 8 and 242026 · Research
- Splitting a set while preserving positive sumset density (Erdős #741)2026 · Research
- Splitting additive bases into sumsets with bounded gaps (Erdős #741)2026 · Research
- Square values at odd indices of a recurrence (OEIS A113254)2026 · Research
- Square-root growth in sets avoiding divisibility by pair sums (Erdős #12)2026 · Research
- Stabilization times increase by one or two in a mass-sharing automaton (OEIS A300997)2026 · Research
- Stable forking conjecture in simple theories2026 · Research
- Strict cosingularity and adjoints2026 · Research
- The book Ramsey number R(B₈, B₁₀)2026 · Research
- Toroidal Elton–Odell theorem2026 · Research
- Unconditional unclonable encryption2026 · Research
- Unique occurrences of primes above 5 as continued-fraction denominators (OEIS A372761)2026 · Research
- Unrestricted Boolean multiplicative complexity of four-term polynomial multiplication2026 · Research
- Upper bounds for spherical codes2026 · Research
- Vanishing percolation probability at criticality in every dimension2026 · Research
- Weakly compact basis factorization2026 · Research
- First Proof: inaugural problem set2026 · Competitions
- IMO 2024 problem set2024 · Competitions
- IMO 2025 problem set2025 · Competitions
- IMO 2026 problem set2026 · Competitions
- Olympiad geometry problem suite2024 · Competitions
- Four-colour theorem1976 · Historical
- Kepler conjecture2014 · Historical
- Robbins conjecture1996 · Historical
Definitions and documentation
How the charts count records
Each record represents a problem, a specified variant or an evaluation question. A record appears once per applicable year, model, subject or evidence label. Year ranges use their final year. Multiple labels can apply, so chart totals may exceed the number of records. Chart selections filter the record list; the type control updates all charts.
These counts measure catalogue coverage. They do not measure model success rates, research importance or total mathematical output. Most source collections omit unsuccessful attempts.
Reported evidence
- verified: A source reports human or external checking. The attempt identifies the checker when known. This does not necessarily mean peer review.
- machine-checked: A source reports proof-assistant checking. Coverage may be a lemma, conditional theorem or complete theorem.
- self-reported: The producing team reports the result or evaluation.
- disputed: Correctness, novelty, attribution or evaluation is contested; the entry identifies which.
- debunked: The specific claim was invalidated or withdrawn. A debunked novelty claim does not imply a false theorem.
Green and red flags identify verified and debunked reports. Other statuses use separate colours and symbols. Where a label concerns an audit or novelty claim, that scope appears in the badge. A problem with multiple attempts may have several statuses; its page keeps those attempts separate.
Formal artifacts and source review
A proof artifact should identify the statement, theorem file, revision, checker version and build procedure. Assumptions, partial coverage and use of native_decide belong in the entry’s additional information. Statement correspondence and kernel checking are separate checks.
A source-review date records reading the source, not rebuilding its proof or independently certifying its mathematics. Entries without such a review retain a pending date. The model column lists the reported system; unreleased systems may use a company name. “Not specified” means the source notes did not identify the system.
Extraction notes
Multi-result papers were separated into individual statements or named variants. AlphaProof Nexus’s public directory lists nine Erdős files and 38 OEIS files; the original notes report 44 OEIS results. File counts and theorem counts are different units. The catalogue indexes the identified files and does not create unsupported entries to match the headline total.
The 2025 GPT-5 Erdős announcement concerned already published solutions. Its coverage is retained here because the original notes do not identify the ten individual problem numbers. It is not counted as a separate research problem. The original notes remain in the repository archive.
Problem explanations
Collatz: an invalid machine-checked disproof
An intuitive picture
Start with a positive integer. If it is even, halve it; if it is odd, multiply it by three and add one. For example, 3 leads to 10, 5, 16, 8, 4, 2, 1. The conjecture asks whether every positive starting value eventually reaches 1.
What failed in this episode
A purported formal disproof passed vulnerable checkers. The maintainer’s postmortem describes an implementation flaw in Lean and a separate flaw in an outdated independent checker. This invalidated the certificate, not the Collatz conjecture.
A successful build must be tied to checker versions and the exact statement being checked. An absence of sorry is only one part of that record.
Feige’s small-deviation conjecture
An intuitive picture
Suppose several independent nonnegative quantities each have mean at most one. Add them up. Even if individual quantities sometimes spike, how much probability must remain below the total mean plus a slack δ?
The scope of the claim
The preprint abstract gives a sharp lower bound when δ ≥ 1 and credits ChatGPT 5.6 Pro with the proof. The catalogue keeps the paper’s range separate from the original notes’ report that the Lean artifact covers δ = 1. Source reading here did not include rebuilding that artifact.
Problem and sources →Fewer multiplications for 4 × 4 matrices
An intuitive picture
The usual recipe for multiplying two 4 × 4 matrices uses 64 scalar multiplications. Clever rearrangements can reuse intermediate products. The question is how many products suffice for an exact recipe that works for every pair of input matrices.
Why the field matters
Arithmetic modulo two has 1 + 1 = 0. An identity that exploits this cancellation need not work for real or complex numbers. Compare algorithms over the same field before comparing their multiplication counts.
The AlphaTensor paper reports a 47-product algorithm over F₂. This is a construction giving an upper bound on the required number of multiplications, not a proof that 47 is minimal. Later characteristic-zero claims are recorded as separate events below.
Problem and sources →Large cap sets in eight dimensions
An intuitive picture
Imagine a grid whose coordinates are 0, 1 or 2, with arithmetic wrapping around modulo three. Choose some grid points while avoiding every line of three distinct points. A cap set is a selection with no such triple. In eight dimensions the grid has 3⁸ points; the challenge is to keep as many as possible.
What the AI contribution means
FunSearch searches for programs that construct good selections. Its reported 512-point example proves that the maximum is at least 512. It does not prove that a larger example is impossible. The original paper describes the construction and the human interpretation of the generated program.
Problem and sources →Tools, benchmarks and related links
Tools and benchmarks
Supporting links from the original notes. Availability and performance figures have not been rechecked.
- DeepSeek-Prover-V2 (2025) - open-weights Lean prover; the 671B model reaches 88.9% on miniF2F-test at pass@8192. Paper.
[machine-checked]
- Goedel-Prover-V2 (2025) - open-weights Lean prover with verifier-guided self-correction; 88.1% on miniF2F-test at pass@32 with a 32B model, 90.4% with self-correction. Paper.
[machine-checked]
- Kimina-Prover (2025) - formal reasoning model trained with RL; the 72B release reaches 84.0% on miniF2F-test at pass@32. Preview paper; no paper yet for the full model.
[machine-checked]
- Archon (2026) - open dual-agent system (planner plus Lean agent) for formalizing research-level mathematics; reported to have fully automated the formalization of First Proof Problem 6. The open counterpart to the closed AxiomProver and Gauss.
[machine-checked]
- Tau Ceti (2026) - an AI-authored Lean library downstream of mathlib: humans write the roadmaps and review rubrics, AI agents write the code and drive the review, an arrangement the project states plainly.
[machine-checked]
- Lean 4 and mathlib - 280,000+ formalized theorems as of mid-2026; where most machine-checked AI proving happens today.
- miniF2F - olympiad-level formal benchmark; the original repo is archived, so use a corrected variant: miniF2F-v2 (data, audit paper) or facebookresearch/miniF2F. Scores are not comparable across variants.
- PutnamBench - formalized Putnam problems in Lean 4, Isabelle and Coq.
- FrontierMath - undergraduate-to-research-level problems, mostly private apart from a twelve-problem public sample; v2 (June 2026) corrected errors in 42% of the original set, so name the version alongside any score.
- LeanDojo-v2 - framework for training, evaluating and deploying Lean 4 provers, and the maintained successor to LeanDojo, whose last release predates current Lean.
- First Proof - unpublished research-level problems from working mathematicians, one-shot with no human interaction, double-blind graded by paid human referees; batch 2 used 30 referees grading in person at Harvard CMSA.
- lean-eval - the Lean team's comparator-based benchmark and leaderboard: a problem counts as solved only if
comparatoraccepts the submission, and every solution is replayed throughnanoda, an independent kernel.
- Formal Conjectures - 2,615 statements formalized in Lean 4, of which 1,029 are open research conjectures. Statements are formalized before any solution exists, which reduces contamination without ruling it out, and is the place a conjecture gets written down before anyone has an answer.
- MathArena - independent competition evaluation from ETH Zurich and INSAIT. Its Putnam run was graded blind by the official Putnam committee; on its ArXivLean set every model, Aristotle included, scored below 20% as of mid-2026.
- IMProofBench - 77 research-level problems with expert human grading of full proofs, not just final answers.
- DL4TP - deep learning for theorem proving; survey paper (COLM 2024). Paper list stops at May 2025.
- AI contributions to Erdős problems - community registry of AI results on Erdős problems; frozen 30 June 2026, no longer updated.