Find the isomorphism type of the finite Abelian group given by: = (X, Y, Z | X³y² = Z¯³, (XYZ)² = 1, X³Y²Z² = 1).

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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EXAMPLES
QUESTION I
Find the isomorphism type of the finite Abelian group given by:
G = (X, Y, Z | X³y² = Z−³, (XYZ)² = 1, X³ Y²Z² = 1).
Q1
3
XYZ² = 1
X²Y²Z² = 1
X³Y²Z² = 1
only use GL3 (Z) - row/column ops to "diaguralize"
R₁-R₂
R₂-2R₁
3
2
3
clean
2
2
2
3
2
5
G
up
the relations:
you can't divide
by 2!
1
10 1
2 2
2
325
C3--C₁
R₂-3R,
100
0 2 0
022
4/204224/22
02
02
R3-R₂
1
0
2
10 0
020
002
7/27 & 7/27
I
Transcribed Image Text:EXAMPLES QUESTION I Find the isomorphism type of the finite Abelian group given by: G = (X, Y, Z | X³y² = Z−³, (XYZ)² = 1, X³ Y²Z² = 1). Q1 3 XYZ² = 1 X²Y²Z² = 1 X³Y²Z² = 1 only use GL3 (Z) - row/column ops to "diaguralize" R₁-R₂ R₂-2R₁ 3 2 3 clean 2 2 2 3 2 5 G up the relations: you can't divide by 2! 1 10 1 2 2 2 325 C3--C₁ R₂-3R, 100 0 2 0 022 4/204224/22 02 02 R3-R₂ 1 0 2 10 0 020 002 7/27 & 7/27 I
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