The Intervention Response Function (IRF)

This preprint introduces the Intervention Response Function (IRF), a derived response-theoretic operator within the Unified Mastery Meta-Theory (UMMT). IRF formalizes how admissible epistemic interventions induce invariant-preserving changes in latent mastery representations under partial observability. The work clarifies conceptual dependencies and establishes priority for IRF as a downstream construct of UMMT, without advancing metrics, algorithms, or empirical claims.