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Theorem base for Specification treeorfail

This is a listing of all goals defined over the current specification. Axioms are yellow, proof obligations purple and theorems green. Click on individual names to get more information on the proof.

Name:	Sequent:	Type:
disj	⊦ fail ≠ some(t)	An Axiom
sel	⊦ some(t) .t = t	An Axiom
inj	⊦ some(t) = some(t0) ↔ t = t0	An Axiom
case	⊦ to = fail ∨ to = some(to .t)	An Axiom
elim	⊦ to ≠ fail → (t = to .t ↔ to = some(t))	An Axiom
gen		An Axiom