2026-06-15 (the diamond axis geometry — two axes + the transfer corner)
Research changelog · TFPT — Introduction and reading guide
The Sheet Diamond is a discrete geometry with two axes ( v218_diamond_axis_geometry, tfpt_2_standard_model, ). Sharpens v94/ v95 with three exact \ lemmas (no new numbers). (1) Axis curvature: along the centered cross the determinant is linear on the winding axis [formula in source] (slope [formula in source] ) and quadratic on the sheet axis [formula in source] (2nd difference [formula in source] ); the anchor block
Opening source excerpt. Formulas and the full argument remain in the original document.
Source location and explicit evidence links
documents/changelog/sections/019-source.tex · lines 260 to 279
These are recorded citation relations. A source citation or topic match does not establish a mathematical or physical result.
- explicit script identifier v95_centered_diamond.py
literal short identifier uniquely resolves in local script registry
- explicit claim identifier status_ledger.csv
exact local ledger claim identifier
- cross reference join tfpt_readouts_extension.wl
TeX and evidence source explicitly name the same Python identifier; statement equivalence not inferred
- cross reference join tfpt_readouts_extension.wl
TeX and evidence source explicitly name the same Python identifier; statement equivalence not inferred
- explicit claim identifier status_ledger.csv
exact local ledger claim identifier
- explicit claim identifier status_ledger.csv
exact local ledger claim identifier
- explicit script identifier v94_sheet_diamond.py
literal short identifier uniquely resolves in local script registry
- cross reference join tfpt_readouts_extension.wl
TeX and evidence source explicitly name the same Python identifier; statement equivalence not inferred