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Abelian one. Take group with e a b c elements. Two composite tables possible. One with self inverse. Other make cyclic one. Both composite table taking transpose retain same entries. Hence it's Abelian.
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Comments
Two composite tables possible.
One with self inverse.
Other make cyclic one.
Both composite table taking transpose retain same entries.
Hence it's Abelian.
But paper 1- 180 to 190
Paper 2 - about 155
For first order ode solve at back and put values. So calculation mistakes avoided and speed can be gain.