Mathematics, 02.10.2019 22:20 ninaaforever
0.58. let r be a relation from a to b. the inverse relation r^-1 from b to a is the set of all ordered pairs of the form (b, a), where (a, b) is in r. show that a relation r on a set is symmetric if and only if r and its inverse are equal.
Answers: 3
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0.58. let r be a relation from a to b. the inverse relation r^-1 from b to a is the set of all order...
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