Biological Persistence Architectures: LP Admissibility as the Structural Ground of Biological Persistence

This is the second paper of the La Profilée Domain Series. Following the Domain Principle (D012) and building on the physical foundation established in Domain I, it specifies the bridge assumptions connecting LP structural variables to biological observables and derives the LP structural account of biological persistence architectures. Biological systems are the richest empirical domain for LP structural analysis. Every biological persistence challenge — maintaining cellular identity under metabolic stress, organismal homeostasis under environmental load, population viability under selection pressure, ecosystem coherence under disturbance — instantiates the LP persistence condition IR = R/(F·M·K) ≤ 1 through specific biological mechanisms. Biology already thinks in persistence problems. LP provides the structural architecture that unifies them. The biological bridge assumptions connect: Frame (F) to regulatory architecture, genomic integrity, and homeostatic set-points; Module (M) to metabolic flexibility, adaptive capacity, and repair systems; Coupling (K) to signaling fidelity, immune regulation, and systemic integration; Transformation load (R) to pathological stress, environmental pressure, and metabolic demand. Six structural results are derived under the biological bridge assumptions. Result I — Cellular Persistence: cellular identity maintenance is a Frame preservation problem under metabolic transformation load. Result II — Disease as IR Dynamics: disease progression can be interpreted as the trajectory of IR in biological state space — from subclinical overload to visible pathology. Result III — Aging as Entropy Accumulation: biological aging instantiates structural entropy production (D009) through progressive loss of homeostatic restoration capacity. Result IV — Cancer as Coupling Failure: malignant transformation can be interpreted as progressive Coupling degradation — the loss of regulated integration between cellular identity and proliferative capacity. Result V — Evolutionary Persistence: natural selection instantiates structural selection (D006) in the biological domain. Result VI — Ecosystem Persistence: ecological community stability instantiates the LP Coherence Zone at the population and ecosystem level. Biological persistence architectures do not merely resemble LP. Under the stated bridge assumptions, they instantiate LP admissibility in the biological domain.