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Theorem in-01
⊦ a ≠ b → (a ∈ b ' + x ↔ a ∈ x)
Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp, localcut,
Comment:
Used by:
in-06
,
in-09
,
inapp
,
inapp-03
,
inapp-05
,
inapp-10
,
inex
,
inex-01
,
isin-01
,
neq-01
,
neq-02
,
neq-03
,
neq-06
,
neq-07
,
Used by units in proved state:
list-last
,
list-del
,
path-reachable
,
olist
,
list-set
,
list-perm
,
list-dup
,
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas:
in-12
,
a
,
in-10
,
Used spec theorems:
Used simplifier rules: