Nuprl Lemma : assoced_elim
11,40
postcript
pdf
a
,
b
:
. assoced(
a
;
b
)
((
a
=
b
)
(
a
= (-
b
)))
latex
Definitions
t
T
,
assoced(
a
;
b
)
,
x
:
A
.
B
(
x
)
,
P
Q
,
P
Q
,
P
Q
,
P
Q
,
pm_equal(
i
;
j
)
,
P
Q
,
prop{i:l}
Lemmas
assoc
reln
,
iff
functionality
wrt
iff
,
pm
equal
wf
,
divides
wf
origin
a,b:
. assoced(a; b) 
((a = b) 
(a = (-b))) a,b:. assoced(a; b) ((a = b) (a = (-b))) 
Tx:A. B(x) Q Q Q Q
Q