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Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(
R
(
x
;
y
)
is a 1-1 relation in
x
in
A
and
y
in
B
)
Who Cites rel
1
1
b?
rel_1_1_b
Def 1-1
x
A
,
y
B
.
R
(
x
;
y
)
Def
==
x
,
x'
:
A
,
y
,
y'
:
B
.
R
(
x
;
y
) &
R
(
x'
;
y'
)
(
x
=
x'
y
=
y'
)
Thm*
A
,
B
:Type,
R
:(
A
B
Type). (1-1
x
A
,
y
B
.
R
(
x
;
y
))
Type
iff
Def
P
Q
== (
P
Q
) & (
P
Q
)
Thm*
A
,
B
:Prop. (
A
B
)
Prop
rev_implies
Def
P
Q
==
Q
P
Thm*
A
,
B
:Prop. (
A
B
)
Prop
Syntax:
1-1
x
A
,
y
B
.
R
(
x
;
y
)
has structure:
rel_1_1_b(
A
;
B
;
x
,
y
.
R
(
x
;
y
))
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
WhoCites
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc