WhoCites
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(
R
is a 1-1 relation)
Who Cites rel
1
1?
rel_1_1
Def
R
is 1-1 ==
x
,
x'
:
A
,
y
,
y'
:
B
.
R
(
x
,
y
) &
R
(
x'
,
y'
)
(
x
=
x'
y
=
y'
)
Thm*
A
,
B
:Type,
R
:(
A
B
Prop). (
R
is 1-1)
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:
R
is 1-1
has structure:
rel_1_1(
A
;
B
;
R
)
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
WhoCites
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc