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Question
Write the smallest reflexive relation on set A = {1, 2, 3, 4}.
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Solution
Here,
A = {1, 2, 3, 4}
Also, a relation is reflexive iff every element of the set is related to itself.
So, the smallest reflexive relation on the set A is
R = {(1, 1), (2, 2), (3, 3), (4, 4)}
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