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Theorem diff-wfrec
⊦ x \ (a + y) = (x -l a) \ y
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: 2
Proof steps: 12
Used lemmas:
diff-n
,
diff-y
,
diff-e
,
Used spec theorems:
list-del
/
del-n
Used simplifier rules:
list-del
/
del-e
list
/
in-rec
list-del
/
del-y
list
/
app-08
list-del
/
del-n
list
/
in-06
list
/
a
list
/
c