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Theorem postfix-rec-right
⊦ x ⊒ a ' + y ↔ x = a ' + y ∨ x ⊒ y
Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by:
postfix-is-lessOrEqual
,
Used by units in proved state:
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 6
Proof steps: 10
Used lemmas:
postfix-one
,
postfix-app-02
,
postfix
,
Used spec theorems:
Used simplifier rules:
list
/
in-append0-not-left
list
/
in-append
list
/
in-14
list
/
c
list
/
c-06
list-data
/
elim-list-c
list
/
e
list
/
app-05
list
/
e-01
list
/
a
list
/
app-03