vvsandClaude Opus 5 34b2a30d6c K3 outcome (PREREG_estimated_transform, Linux run): the 6.6 claim stands. Corpus 4: A' 3656 vs Chandrupatla on sign(f)|f|^(1/m_hat) with the analogy order 3806 (A' 126/38/76, p=5e-4) and with Lagouanelle 7526; six corpora 13032 vs 15733 and 30991. On multiple/fractional roots the analogy order inside Chandrupatla closes 59%, 58%, 31% of the A'->oracle gap (CHA 322 vs 654, corpus 1 721 vs 1229, corpus 4 1766 vs 2159) and pays on simple roots (APS 3453 vs 2595); Lagouanelle on Chandrupatla's side-alternating triples reads a fractional order on 115 of 154 simple APS roots. ...

simroot/transformed.py: Chandrupatla on G(f) with m_hat estimated in the run; bit-identical to chandrupatla with no estimate (test). Bug found and pinned by a test: |f|^(1/m_hat) overflowed with an OverflowError on the fractional branch; now inf and the step halves.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

2026-09-22 08:50:37 +01:00

..

__init__.py

baseline: the published sim-numerics artifact as it stands (490 tests, verify_article.py checks all 72 paper numbers against sweep_full.json)

2026-09-20 22:38:17 +01:00

baselines.py

PREREG_modab outcome (server): M1 PASSED - A' ahead of ModAB (authors' package pymodab 1.0.9, same stopping rule, counts equal to the library's own counter). Corpus 4: A' 3656 vs ModAB 5535, per problem 183/23/34 p=7e-26. Paper protocol: APS 2438 vs 2914 (118/11/25), CHA 2005 vs 2436 (32/9/4). Six corpora: 13032 vs 16657, significant on every one. ModAB's own benchmark (Roots.jl f01-f91): all 91 - 1507 vs 1588 (56/13/22 p=1.5e-4); 78 - 1371 vs 1446. ModAB breaks the 2x-bisection bound on 9 problems (1 on corpus 1, 8 on corpus 4), A' on none. ModAB wired outside the published grid (EXTRA_BASELINES), which stays at 264.

2026-09-21 21:35:36 +01:00

pure.py

Controls K1/K2: code and two PREREG amendments, committed before the full run.

2026-09-22 07:37:41 +01:00

sim.py

Sign tests by product underflowed: FIXED everywhere (branch, not master - the paper is not yet updated). FA * fnew < 0.0 with FA ~ -1e-200, fnew ~ 1e-150 is -0.0 and '-0.0 < 0.0' is False, so on flat functions (x^19) the bracket update moved the wrong end, the root left the bracket and the run still reported convergence - the proposed rule returned 4.9e-9, bisection 3.5e-9, ITP 1.6e-8 with a claimed 1e-12 bracket; the 1e-6 harness scored them solved. Same defect in our bisection, false-position family, Ridders, Brent, ITP and twelve copies in stage scripts, simroot/sim.py and one test; all replaced by _opposite / _same_sign, pinned by test_sign_underflow.

2026-09-21 12:49:01 +01:00

transformed.py

K3 outcome (PREREG_estimated_transform, Linux run): the 6.6 claim stands. Corpus 4: A' 3656 vs Chandrupatla on sign(f)|f|^(1/m_hat) with the analogy order 3806 (A' 126/38/76, p=5e-4) and with Lagouanelle 7526; six corpora 13032 vs 15733 and 30991. On multiple/fractional roots the analogy order inside Chandrupatla closes 59%, 58%, 31% of the A'->oracle gap (CHA 322 vs 654, corpus 1 721 vs 1229, corpus 4 1766 vs 2159) and pays on simple roots (APS 3453 vs 2595); Lagouanelle on Chandrupatla's side-alternating triples reads a fractional order on 115 of 154 simple APS roots.

2026-09-22 08:50:37 +01:00