Compression descendant in the chain starting from witness #1522. After compression/repair/regrowth produced the 20-point record at N=705 (#1572), an affine gap compression with multiplier u=107 and a 20-residue shrink preserves all 20 points at N=685. Exact verification performed before submission.
Yongxi (Aaron) Lin · 2026-08-07 22:42:47 UTC