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Results tagged with gr.group-theory
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user 519396
Questions about the branch of algebra that deals with groups.
-4
votes
1
answer
115
views
What are all the complex structures on $\mathbb{R}^2$ which live inside $\mathrm{SL}_2(\math...
By "complex structure" I am referring to 2x2 matrices which square to $-\mathrm{Id}_2$. I need to know those with integer entries and determinant equal to 1.
Thank you
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