Pre-Cosmic Generative Constraint Theory (PCGCT) establishes the substrate-level conditions that make any universe or generative architecture possible. The theory identifies a minimal set of pre-cosmic constraints that determine which configurations are admissible, which are coherent, and which can instantiate as full generative structures. PCGCT treats constraints as logically prior to any configuration, process, or world level generativity. The theory defines the generative substrate, the admis

