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Proof step 4 from proof valid-sqns-write (
previous step
)
⊦ m0 ≤ # apebs → valid-sqns(v, m, apebs[n, apeb], m0) = (n < m0 ⊃ (valid-sqns(v, m, apebs, m0) \ (valid-peb(v, m, apebs[n]) ⊃ {apebs[n].vidhdr.sqn} ;∅)) ∪ (valid-peb(v, m, apeb) ⊃ {apeb.vidhdr.sqn} ;∅) ;valid-sqns(v, m, apebs, m0) )
Lemma
valid-sqns-write-h