Nuprl Lemma : eq_atom_eq_true_elim
12,41
postcript
pdf
x
,
y
:Atom. (
x
=a
y
= tt
)
(
x
=
y
)
latex
ProofTree
Definitions
,
t
T
,
P
Q
,
x
:
A
.
B
(
x
)
,
P
&
Q
,
P
Q
Lemmas
btrue
wf
,
eq
atom
wf
,
bool
wf
,
assert
of
eq
atom
,
eqtt
to
assert
,
assert
wf
,
iff
transitivity
origin
x, y:Atom. (x =a y = tt 
) 
(x = y)
x, y:Atom. (x =a y = tt ) (x = y)
T Qx:A. B(x)
Q