Lemma (Dynamical Permanence via SE44 / Guarded Update).
Lemma (Dynamical Permanence via SE44 / Guarded Update).
Let be a normed space with norm . Let be the symbolic state at step . Define the admissible (SE44) set
Let be the proposed drift/update map and define the guarded enforcement update by
Claim (Forward Invariance). If , then for all .
Claim (Boundedness). If is compact (equivalently closed and bounded in finite-dimensional ), then is bounded; i.e., such that for all .
Interpretation. This is dynamical permanence as governance: updates are admitted only when they remain within the admissible region; otherwise the system holds the last valid fossil. (Safety is guaranteed; liveness depends on how often lands in .)
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