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Theorem And-unfold
⊦ a ∈ s → aP ∧_ s = (aP(a) ∧ aP ∧_ (s -- a))
Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas:
And-ins
,
Used spec theorems:
set-basic
/
indef
Used simplifier rules:
set-basic
/
size-zero-01
set-basic
/
ne-01
set-union
/
del-addeq-04