A Friedmann-Class Cosmological Evolution Law in Rupture–Containment Cosmology

This work establishes that Rupture–Containment Cosmology (RCC) admits a homogeneous and isotropic Friedmann-class cosmology governed by admissible temporal evolution. By treating time as a constrained physical quantity and enforcing global containment, the framework structurally excludes finite-time cosmological singularities while reproducing standard expansion phenomenology in correspondence regimes. The paper positions RCC as a singularity-excluding cosmological class rather than a tuned model.