real numbers defined by aRy iff x - y is an integer. In this question, Let...
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real numbers defined by aRy iff x - y is an integer. In this question, Let R be the relation on the set you may use basic facts about integers (e.g. the sum of two integers is an integer) without proof. (a) Prove that R is an equivalence relation on R. on (b) Let N := R/R. Let plus : N x N → N be given by plus((r), [y]) := [x + y). Show that plus is well-defined. (c) Let times : N x N N be given by times(r), [y]) = [r y]. Show that times is not well-defined. %3! real numbers defined by aRy iff x - y is an integer. In this question, Let R be the relation on the set you may use basic facts about integers (e.g. the sum of two integers is an integer) without proof. (a) Prove that R is an equivalence relation on R. on (b) Let N := R/R. Let plus : N x N → N be given by plus((r), [y]) := [x + y). Show that plus is well-defined. (c) Let times : N x N N be given by times(r), [y]) = [r y]. Show that times is not well-defined. %3!
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Related Book For
Discrete Mathematics and Its Applications
ISBN: 978-0073383095
7th edition
Authors: Kenneth H. Rosen
Posted Date:
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