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Proof step 8 from proof tr-null (conclusion)

⊦ tr(null, t) = (emp ∧ ⌜t = leaf⌝ )

User applied rule expand right

And obtained the following new goals

Proof step 7:
⊦ tr(null, t)(H) ↔ (emp ∧ ⌜t = leaf⌝ )(H)

Rule argument

[fmapos-arg: pos: right 1]

Additional information

[[CONCRETESIMPRULES : ()]]