2916 — The Mixed Kummer Grade Survives the Generic Physical Bridge Readout
Typed operation order
Entry 2914's mixed grade must be tested without conflating three distinct operations:
- the source sheet covector on the left triangle;
- the source sheet covector on the right triangle;
- the bridge occurrence trace after the ordered residue.
Each triangle source covector detects its own marked Kummer class by Entry 2895. Their tensor product therefore detects
Bridge occurrence factor
Retain resolved bridge occurrences . The physical diagonal specialization gives
Consequently the mixed physical readout is
up to the already frozen overall sign of the ordered bridge residue.
This is generically nonzero whenever the bridge is nonsoft and the two individual pointed finite parts are nonzero.
Why deck-trace vanishing is irrelevant
Tracing the internal two-sheet occurrences inside either triangle before applying its source sheet covector would kill that triangle's Kummer class. Entry 2895 proved that such a trace is not the source physical readout. The correct source order selects both labelled sheets first and traces only the resolved bridge occurrence afterward.
Result
The rank-one mixed Kummer grade survives the generic physical bridge readout. It vanishes canonically on
which is the already existing bridge-soft support, and on any independently derived zero locus of an individual finite part.
Thus relations between two local relative-readout classes produce a genuine global observable without introducing a new carrier stratum.
Scope and next falsifier
The result remains at the ordered bridge-residue associated grade. The next test is extension from that grade to the complete unresidued double-triangle period: derive the first normal/Rees lift off and determine whether the mixed observable persists, becomes torsion, or mixes with bulk elliptic coefficients.
Durable artifacts
research/benincasa/check_mixed_kummer_physical_readout.pyresearch/benincasa/mixed-kummer-physical-readout.json