Spectral Transition Track

This track contains general mathematical tools for mode transition in parametrized spectral families.

Contents

• framework.md: full spectral framework.
• framework-simplified.md: shorter explanatory version.

Interface Rule

This track may support the Spin(2,3) programme by supplying language for:

• parametrized symmetric operators;
• spectral gaps;
• eigenvector and projector sensitivity;
• projective geometry of modes;
• boundary-restricted projector observables.

It does not, by itself, establish any Spin(2,3) -> Faddeev/Efimov bridge. Any such bridge belongs in research/faddeev-efimov/ and must pass through its proof obligations before entering the core framework.