2809 — The Complete Source Elimination Ideal Is the All-Soft Maximal Ideal
Correction and hard claim
Entry 2804 used an incomplete two-patch Bézout atlas. The frozen marked denominators also obey
Together with
the coefficient matrix has determinant . Therefore, over characteristic different from two,
The reverse inclusion is source-certified: at , every marked denominator lies in the fiber ideal . Hence an external polynomial in the marked-denominator ideal has zero constant term.
Complete Bézout contraction
The third local Bézout vector is
The exact checker verifies on all 64 exterior-basis elements on each required patch. In particular, , the apparent two-patch soft-diagonal failure, is contracted by . All three source constants vanish simultaneously only at .
Total de Rham compatibility
Use on Koszul degree . Each Bézout coefficient is constant in the fiber variables, so . Since raises Koszul degree by one, the mixed coefficient is
Thus the multiplication-Koszul contraction extends to the total Koszul–de Rham complex on the same three-patch cover.
Narrow conclusion
The rank-26 marked-pole complex has no supported remainder away from the all-soft external origin. The combined common incidence there is .
This does not yet compute the all-soft costalk, identify its Gysin generators, or prove physical activation by a source cycle. Those are the next finite falsifiers. No new Carrier divisor is justified.
Durable artifacts
research/benincasa/check_rank26_marked_pole_bezout_contraction.pyresearch/benincasa/rank26-marked-pole-bezout-contraction.jsonresearch/benincasa/check_rank26_external_elimination_and_total_contraction.pyresearch/benincasa/rank26-external-elimination-total-contraction.json