Let S be a subset of Sn where S = {a € Snla(1) = 1}. Show that S is a subgroup of Sn.
Let S be a subset of Sn where S = {a € Snla(1) = 1}. Show that S is a subgroup of Sn.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.3: Subgroups
Problem 8E: Find a subset of Z that is closed under addition but is not subgroup of the additive group Z.
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