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• Dag-previous-quorum

Dag-previous-quorum-p-when-reachable

The invariant holds in every reachable state.

Definitions and Theorems

Theorem: dag-previous-quorum-p-when-reachable

(defthm dag-previous-quorum-p-when-reachable
  (implies (and (system-state-reachablep systate)
                (system-committees-fault-tolerant-p systate))
           (dag-previous-quorum-p systate)))