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Mathematics
Problem
On the set of integers
Z
\mathbb Z
Z
, a relation
R
R
R
is defined by
a
R
b
⟺
a
+
b
is odd
.
a \thinspace R \thinspace b \iff a+b \text{ is odd}.
a
R
b
⟺
a
+
b
is odd
.
Examine whether
R
R
R
is reflexive, symmetric and transitive, and state whether it is an equivalence relation. Give justification for each property.
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