Apr 3, 2026 SILVER Kronecker S_40: Complete Character Table and Targeted Coefficients — 94.9% Nonzero Complete character table of S_40 (37,338 partitions, 1.394 billion entries, 9.5 hours on 64-core CPU). Values exceed int64 (max |chi| = 5.9 x 10^22). To our knowledge, the first publicly archived expl... Code Dataset algebraic-combinatoricsrepresentation-theorysymmetric-groupsgeometric-complexity-theory
Mar 31, 2026 SILVER Kronecker Coefficients: Complete S_30 Table — 26.4 Billion Nonzero Triples in 7 Minutes Complete Kronecker coefficient tables for S_20 (32.7M nonzero, 3.7s) and S_30 (26.4B nonzero, 4.9 min) computed on a single NVIDIA B200 GPU. S_30 recomputed 2026-04-06 with Kahan summation kernel: 26,... Code Dataset algebraic-combinatoricsrepresentation-theorysymmetric-groupsgeometric-complexity-theory
Mar 31, 2026 SILVER 54yr open Zaremba Density Phase Transition: A={1,2,3} Appears to Have Full Density UPDATED 2026-04-23 audit: A={1,2,3} has exactly 27 uncovered denominators through the completed 10^10 run, all ≤ 6,234. Several {1,2,k} exception counts are stable across available completed ranges, b... Code number-theorycontinued-fractionsdiophantine-approximationcomputational-mathematics
Mar 30, 2026 SILVER Cohen-Lenstra at Scale: h=1 Rate Falls to 15% at 10^10, Genus Theory Dominates GPU computation of 30 billion class numbers for real quadratic fields reveals that the h(d)=1 rate DECREASES from 42% at d~10^4 to 15.35% at d~10^10 and is still falling. This is NOT non-monotone conv... algebraic-number-theorycohen-lenstra-heuristicscomputational-mathematics
Mar 29, 2026 SILVER Digit 1 Dominance: Five Digits With 1 Beat Fourteen Digits Without At n=20 (1,048,575 subsets): dim_H(E_{1,...,5}) = 0.837 while dim_H(E_{2,...,20}) = 0.768. Five digits containing 1 produce a larger Cantor set than fourteen digits without it. Removing digit 1 from {... continued-fractionsfractal-geometryspectral-theorydiophantine-approximation
Mar 29, 2026 SILVER 54yr open Exploratory BFS Depths for Zaremba Generators: Short-Word Expansion Data to p=1021 Exploratory GPU BFS data for Zaremba generator diameters for all 172 primes p ≤ 1021. Audit caveat: the current kernel uses determinant -1 generators and stops when total_visited reaches |SL₂(p)|, so ... Code number-theorygroup-theorycontinued-fractionscombinatorics
Mar 28, 2026 SILVER 54yr open Congruence Spectral Gaps for Zaremba's Semigroup Are Uniform FP64/N=40 cuBLAS computation of congruence spectral gaps for Zaremba's semigroup Γ_{1,...,5}. All 168 primes to p=1000 have σ_p ≥ 0.344. The three smallest gaps occur at p=491 (σ=0.344), p=877 (σ=0.35... number-theoryspectral-theorycontinued-fractions
Apr 6, 2026 BRONZE Digit 1 Amplification in Zaremba Density: Strong Effect, Inverse-Square Law Still Unconfirmed Audit revision: digit 1 strongly amplifies Zaremba density relative to digit 2, but the headline inverse-square law is not established by the current data. At matched N = 10^10 for {1,k} and {2,k}, k=... continued-fractionsnumber-theorydiophantine-approximation
Apr 1, 2026 BRONZE 54yr open A={1,2} Density Fits Logarithmic Growth: 30 + 4.65·log₁₀(N), Testable at 10^12 The Zaremba density for A={1,2} fits density = 31.5 + 4.47·log₁₀(N) (R² = 0.9984, 5 empirical measurements at N = 10^6, 10^9, 10^10, 10^11, 10^12; forecasted values such as for N > 10^12 are extrapola... Code number-theorycontinued-fractionsdiophantine-approximationcomputational-mathematics
Apr 1, 2026 BRONZE 54yr open The {1,k} Density Hierarchy: Digit 2 Is Worth 9x More Than Digit 3 Complete density computation for all {1,k} pairs at 10^11. Density drops exponentially: {1,2}=80.75%, {1,3}=9.11%, {1,4}=1.07%, ..., {1,10}=0.0085%. Only {1,2} has Hausdorff dimension above 1/2. Updat... Code number-theorycontinued-fractionsdiophantine-approximationcomputational-mathematics
Mar 31, 2026 BRONZE Zaremba Exception Hierarchy: 27 → 2 → 0 as Digits Grow Corrected 2026-04-23 audit: the 27 uncovered denominators for A={1,2,3} through the completed 10^10 run are 6,20,28,38,42,54,96,150,156,164,216,228,318,350,384,558,770,876,1014,1155,1170,1410,1870,205... number-theorycontinued-fractionsdiophantine-approximation
Mar 29, 2026 BRONZE GPU Matrix Enumeration: 175× Faster Zaremba Verification via Batched 2×2 Multiply Reformulating CF tree enumeration as batched 2×2 matrix multiplication on GPU eliminates all CPU bottlenecks. The fused expand+mark+compact kernel verifies 100M values in 7.5 seconds on a single B200,... computational-methodsgpu-computingnumber-theory
Mar 29, 2026 BRONZE 54yr open Zaremba's Conjecture (A=5): Proof Framework via GPU Verification + MOW Spectral Theory (Not Peer-Reviewed, Known Gaps Remain) Proof FRAMEWORK (not a completed proof) for Zaremba's Conjecture (A=5). Computational evidence: original v6 GPU brute-force run reported zero uncovered denominators to 2.1×10^11, but it is not certifi... Code number-theorycontinued-fractionsspectral-theorycomputational-mathematics
Mar 29, 2026 BRONZE 54yr open Zaremba Representation Counts Grow as d^{0.674} — Hardest Cases Are Small d The number of continued fraction representations R(d) (with all partial quotients ≤ 5 and gcd(a, d) = 1) grows empirically as d^{0.674}. This was established by ordinary least-squares regression of lo... number-theorycontinued-fractions
Mar 28, 2026 BRONZE 54yr open Zaremba Transitivity: Verified to p=17,389; All-Prime Algebraic Argument Still Provisional Computational transitivity check: the generators Γ_{1,...,5} act transitively on nonzero vectors in (Z/pZ)^2 for each of the first 2,000 primes, up to p=17,389. Audit revision: the all-prime Dickson-c... Code number-theorygroup-theorycontinued-fractions
Mar 28, 2026 BRONZE 54yr open Zaremba Witnesses Concentrate at α(d)/d ≈ 0.171, Connected to the Golden Ratio The smallest Zaremba witness for d concentrates at a/d ≈ 0.171 with 99.7% sharing CF prefix [0; 5, 1, ...]. The concentration lies between the convergents 1/6 and 2/11, with a heuristic connection to ... number-theorycontinued-fractionsdynamical-systems