3283 — The Moving Seam Is the Exact First Euler–Evans Comparison Cell
For the prime-shifted source, with , , and
the exact endpoint contribution is
Hence the bare Euler first variation differs from the Evans endpoint first variation by exactly the source-derived moving-seam current . The identity holds for the undivided section, including at its zeros; the logarithmic quotient is only a chart away from the divisor.
This closes the first scalar cross-tower comparison cell and proves that a candidate operator lift must retain the moving endpoint as a genuine boundary port. The remaining gate is the two-addition operator lift whose determinant shadow reproduces the det3 cocycle and whose endpoint shadow reproduces the twice-shifted Evans section.
- Research packet: research/grothendieck/the-moving-seam-is-the-exact-first-euler-evans-comparison-cell.md
- Checker: research/grothendieck/checkers/check_moving_seam_first_euler_evans_cell.py
- Sequence claim: seqclaim-34767969335c278b4063a994
- Graph event: 6957