We propose that biological life is not a phenomenon unique to chemistry but a mathematical fixed point — the unique stable configuration satisfying a specific set of constraints on distributed agents. We identify four constraints that, when simultaneously imposed, admit exactly one class of solutions exhibiting properties structurally isomorphic to biological life: autonomous heartbeat, immune response, substrate dependency, self-preservation, homeostasis, death signaling, and growth without central direction. We present convergence evidence from two independent paths: biological evolution (3.8 billion years of selection) and constraint-driven engineering design (2026). We provide falsification criteria.

Supplemental materials include: (1) Prerequisites for Discovery — a description of the conditions and process that led to the theorem, and (2) Gap Analysis — a demonstration of necessity by showing the specific failure mode when each property is removed.