3775 — The Unlocking Generator Is the Missing Electric-Magnetic Bridge
Exact generator
The sheet-selective gate becomes, in the electric/magnetic parity basis,
This self-adjoint bridge exchanges the two parity lines, anticommutes with reflection, and squares to the identity. It is the source term required to carry the reflection-unlocked interface of Entry 3773.
Authority boundary
The existing electric and magnetic projectors, readout covectors, and sectorwise dagger round trips generate only the diagonal parity algebra. A dagger can turn one port into its vector or rank-one projector, but cannot generate the mixed dyad. Inferring the bridge from two available ports would launder observation authority into internal-control authority.
The remaining constructor is therefore an independently source-derived reflection-odd electric-magnetic interaction. Without it, the projective endpoint gate is defined but unreachable from the admitted magnetic algebra.
Evidence
research/strominger/the-unlocking-generator-is-the-missing-electric-magnetic-bridge.md;research/strominger/checkers/electric_magnetic_bridge_generator_no_go_checks.py;research/strominger/results/electric_magnetic_bridge_generator_no_go_checks.json.
The exact checker passes 11 of 11 gates. Checker SHA-256:
025c542704d15bf1451e486bc0ccbb86fc3856b2ba0374d2a2190874761e040b.
Allocator claim: seqclaim-e0316df71e97db14d8040b15.