There are two group of order 4, namely Z, and Z2 Z2, and only one of them can be isomorphic to G/Z. Fill in the the multiplication table for the quotient group G/Z, and determine which of the two groups of order 4 is isomorphic to G/Z * || Z iz z iz jz kZ iZ jZ kZ

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.8: Some Results On Finite Abelian Groups (optional)
Problem 15E: 15. Assume that can be written as the direct sum , where is a cyclic group of order . Prove that...
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Abstract Algebra 

 

Below is the multiplication table for G=the "octonion group"
1
-1
-i
1 j
-j
k
-k
*
1
1
-1
-i
k
-k
-j
-j
-1
-1
1
-i
i
ーk
k
i
-1
1
k
-k
-j
-i
-i
i
1
-1
-k
k
j
-j
ーj
k
ーk
k
-1
1
i
-j
-j
-k
1
-1
-i
i
k
k
ーk
ーj
-i
i
-1
1
-k
ーk
k
-j
i
-i
1
-1
Let Z
= {1, –1} be the center. There are four left cosets of Z, namely
• 1Z = Z = {1, –1}, whose elements are shown in red
iZ = {i, -i}, whose elements are shown in gray
• jZ = {j,-j}, whose elements are shown in olive
• kZ = {k, –k}, whose elements are shown in blue.
Transcribed Image Text:Below is the multiplication table for G=the "octonion group" 1 -1 -i 1 j -j k -k * 1 1 -1 -i k -k -j -j -1 -1 1 -i i ーk k i -1 1 k -k -j -i -i i 1 -1 -k k j -j ーj k ーk k -1 1 i -j -j -k 1 -1 -i i k k ーk ーj -i i -1 1 -k ーk k -j i -i 1 -1 Let Z = {1, –1} be the center. There are four left cosets of Z, namely • 1Z = Z = {1, –1}, whose elements are shown in red iZ = {i, -i}, whose elements are shown in gray • jZ = {j,-j}, whose elements are shown in olive • kZ = {k, –k}, whose elements are shown in blue.
There are two group of order 4, namely Z4 and Z2 Z2, and only one of
them can be isomorphic to G/Z. Fill in the the multiplication table for
the quotient group G/Z, and determine which of the two groups of order
4 is isomorphic to G/Z
* || z iz jZ kZ
Z
iz
jZ
kZ
Transcribed Image Text:There are two group of order 4, namely Z4 and Z2 Z2, and only one of them can be isomorphic to G/Z. Fill in the the multiplication table for the quotient group G/Z, and determine which of the two groups of order 4 is isomorphic to G/Z * || z iz jZ kZ Z iz jZ kZ
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ISBN:
9781285463230
Author:
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Publisher:
Cengage Learning,