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Theorem count-insert
⊦ count(a, bag ++ b) = (a = b ⊃ 1;0) + count(a, bag)
Type: An axiom
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by:
bag-add2-eq-elim
,
count-1
,
count-other
,
count-same
,
ext-rec
,
insert-inj
,
insert-nonempty
,
Used by units in proved state:
bag-union
,
Proof exists?: No