Problem 1. Determine whether each of the following binary operations is associative and/or commutative. Then for each operation determine if it has a left identity, a right identity, an identity; a left zero, a right zero or a zero element (if yes find them all). (In this assignment Z is the set of all integers, Z+ is the set of all positive integers, Q is the set of rational numbers, R is the set of all real numbers and C is the set of complex numbers.) 1. On set of integers Z, * operation is defined by the formula m*n = m+n – 3 Solution. 2. On rationals Q, o -operation is defined by тоn3D m-тп Solution. 3. On positive integers Z+,o operation is defined by mon = gcd(m, n) where gcd(m, n) is the largest positive integer that divides both integers m and n.
Problem 1. Determine whether each of the following binary operations is associative and/or commutative. Then for each operation determine if it has a left identity, a right identity, an identity; a left zero, a right zero or a zero element (if yes find them all). (In this assignment Z is the set of all integers, Z+ is the set of all positive integers, Q is the set of rational numbers, R is the set of all real numbers and C is the set of complex numbers.) 1. On set of integers Z, * operation is defined by the formula m*n = m+n – 3 Solution. 2. On rationals Q, o -operation is defined by тоn3D m-тп Solution. 3. On positive integers Z+,o operation is defined by mon = gcd(m, n) where gcd(m, n) is the largest positive integer that divides both integers m and n.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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