Question

Let A = (p,q, r, s) and R be an universal relation on A. Write down the relation R. Find
out the smallest and largest subset of the universal relation which is an equivalence
relation,​

Answer 1

Answer:

easy to find examples of equivalence relations (for example, A shares room with B), but I can't seem to find a real life example of an order relation (that is, a relation that's reflexive, antisymmetric and transitive).

In particular, I can't seem to find a (real life) relation that is reflexive, yet not symmetric.

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asked

Jul 3 '14 at 1:40