ProCreations/repro-multicalibration-yields-better-matchings

Diffusion flow matching — paper-native exact audit

An independent CPU reproduction of the six literal convergence mechanisms. Two warning-strict cold runs execute exact Brownian-bridge Gaussian Euler dynamics, the source's implicit non-uniform schedule, correlated-Gaussian W2 oracles, product-coupling Hessians, and integration-by-parts identities. Every claim has a structurally independent oracle and an executed destructive control; all generated bytes are retained.