MATHEMATICAL CITY / NEXUS / HUMANITIES CORRESPONDENCE INSTRUMENT

SONGS

Songs From The Ruins. An unchanged poetic source, 165 source-stable credentials, and a navigable constellation of mathematical correspondences.

165poems

17proof families

4parts

Hevidence class

The correspondence

F(T_math(x)) = T_poem(F(x))

This is the archive's selected structure-preservation diagram. Each credential proposes an interpretive mapping between a poem and an operative mathematical relation. A correspondence is not automatically a proven global isomorphism: injectivity, surjectivity, inverse maps, and full diagram commutativity require separately specified domains and tests.

Correction preserved: E47 occupancy 47/125 is a rank fraction, not a universal physical coherence threshold. A literary credential does not prove a mathematical theorem or physical claim. All original evidence classes remain independent.

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Pulse · optional correspondence packet

Publish only the selected literary credential into the existing CITY-PULSE/1.0 bus. No change to E47 states, no promotion of evidence, and no new agent infrastructure.