O If a group G acts on a set S, every element of S is fixed by the identity of G. O Every group of order 42 has a normal subgroup of order 8. Qx Q is a cyclic group.
O If a group G acts on a set S, every element of S is fixed by the identity of G. O Every group of order 42 has a normal subgroup of order 8. Qx Q is a cyclic group.
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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Question

Transcribed Image Text:1.
your answers by either writing a sentence or two or by providing a counterexam-
ple.
Determine if the following statements are true or false and justify
(a) If a group G acts on a set S, every element of S is fixed by the identity of
G.
(b) Every group of order 42 has a normal subgroup of order 8.
(c) Q x Q is a cyclic group.
(d) It is obvious from every Cayley graph of a group G whether or not G is
cyclic.
(e) Z/15Z x Z/14Z is isomorphic to Z/21Z x Z/10Z.
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