Your matrix has determinant 4 - 9 = -5. Hence, the group it generates
in GL(2,QQ) is necessarily infinite.
Le 24/03/2021 à 08:47, Mattia Villani a écrit :
I do not have real code, only a matrix:
matrix([[1,-3],[-3,4]])
which should be a representation of the group Z5: I want to verify it with
Sage
Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com ha
scritto:
On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani <matt...@gmail.com> wrote:
Is is possible to find the group given the matrix presentation?
Please be more specific. Post some Sage commands you're trying.
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