2026-06-24 (Honest attempt at an external target: v391 reduces it, not a closure)
Research changelog · TFPT — Introduction and reading guide
v391 ( ALPHA.QUILLEN.PROGRESS.01) — an honest attempt at the external target ALPHA.QUILLEN.EXACT.01 ( v382, door 5). It REDUCES the open step to a sharper named sub-target via a solvable model but does not close it: ALPHA.QUILLEN.EXACT.01 stays \ (external math, type A, v384). \ a solvable model [formula in source] on a circle of circumference [formula in source] equals [formula in source] , whose [formula in source]
Opening source excerpt. Formulas and the full argument remain in the original document.
Source location and explicit evidence links
documents/changelog/sections/013-source.tex · lines 309 to 324
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