Question
Let A = {a, b, c}. The relation R is defined from A to A as follows R = {(a, b), (a, c), (b, c),
Let A = {a, b, c}. The relation R is defined from A to A as follows R = {(a, b), (a, c), (b, c), (c, a)}.
a) Explain why R is not a function, then find R1 ⊆ R such that R1 is an injective function.
b) Explain why R is not a ”strict” order on A, then find R2 ⊆ R such that R2 is a strict order on A.
c) Explain why R is not an equivalence relation, then show that if R3 is an equivalence relation containing R then R3 = A × A.
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Discrete Mathematics and Its Applications
Authors: Kenneth H. Rosen
7th edition
0073383090, 978-0073383095
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