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2017-07-25 17:49:53 +0200 | asked a question | Check if a finitely generated matrix group is finite (works with QQ and not with CC) Dear all, I am a newbie in sage. I would like to check if a finitely generated matrix group is finite. Before to proceed with the calculation on my actual problem (where matrices have complex entries), I have tried a very simple example. Consider the group generated by the matrices [1,0,0,1] and [0,1,1,0], this group is clearly finite. Can somebody explain me why the following code works: but if I change the field QQ -> RR (or CC), an error is generated: Is there any way to force the second piece of code to work with matrices with entries in CC? Thank you in advance. |