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Mathematics
Mathematics
Problem
Let
A
=
{
1
,
2
,
3
}
A=\{1,2,3\}
A
=
{
1
,
2
,
3
}
and
R
=
{
(
1
,
2
)
,
(
2
,
1
)
,
(
2
,
3
)
,
(
3
,
2
)
}
R=\{(1,2),(2,1),(2,3),(3,2)\}
R
=
{(
1
,
2
)
,
(
2
,
1
)
,
(
2
,
3
)
,
(
3
,
2
)}
. Explain in one or two sentences why
R
R
R
is symmetric but not reflexive.
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