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NextDiamondImpDiamond
⊢
f
⊃
f
NextDiamondImpDiamond
Proof:
1
⊢
(
skip
;
true
) ;
f
≡
skip
; (
true
;
f
)
ChopAssoc
2
⊢
(
skip
;
true
) ;
f
≡
f
1
,
def. of
,
3
⊢
(
skip
;
true
) ;
f
⊃
f
ChopImpDiamond
4
⊢
f
⊃
f
2
,
3
,
Prop
qed
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2024-08-03
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