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Theorem base for Specification option

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

Name: Sequent: Type:
map-Some ⊦ Some(a).map(f) = Some(f(a)) An Axiom
map-None ⊦ None.map(f) = None An Axiom
getOrElse-Some ⊦ Some(a).getOrElse(a0) = a An Axiom
getOrElse-None ⊦ None.getOrElse(a0) = a0 An Axiom
disj-Some-None ⊦ Some(a) ≠ None An Axiom
sel-Some-dotget ⊦ Some(a).get = a An Axiom
inj-Some ⊦ Some(a) = Some(a0) ↔ a = a0 An Axiom
case-Option ⊦ opt = Some(opt.get) ∨ opt = None An Axiom
elim-Some ⊦ opt ≠ None → (get = opt.get ↔ opt = Some(get)) An Axiom
genOption('a) freely generated by None, Some; An Axiom