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I understand what reflexive relation on a set is, but I struggle to come up with a practical use of it - why would you even bother defining it?

I would really appreciate a couple examples, where reflexions are used, so it would be a little easier to understand - why they are needed?

Даниил Носиков
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    By itself, reflexivity doesn't mean much. It usually is combined with other properties, like symmetry or transitivity, to make for interesting classes of relations. If I am going to speak loosely, though, reflexivity is often used to rule out pathological cases. – JonathanZ Jun 01 '23 at 02:19
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    As an example, this question might be of interest to you. – JonathanZ Jun 01 '23 at 02:22
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    @JonathanZsupportsMonicaC I saw your answer linked in the comment above. It is something I never thought about. Thanks for your elucidation. – P Vanchinathan Jun 01 '23 at 05:26
  • @PVanchinathan - Glad you liked it. – JonathanZ Jun 01 '23 at 13:57

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