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Proof step 3 from proof switch-ownership (previous step)

rely(me, O1, H1, O2, H2) ⊦ !(me, O1, P) = !(me, O2, P)

User applied rule expand right

And obtained the following new goals

Proof step 4:
rely(me, O1, H1, O2, H2) ⊦ !(me, O1, P)(H) ↔ !(me, O2, P)(H)

Rule argument

pos: right 1

Additional information