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Karl's user avatar
Karl's user avatar
Karl
  • Member for 14 years, 1 month
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question
11
Which elements in SL2(Q) are conjugated to an element in SL2(Z)
Oct 26, 2010
question
7
Has a conjugation of SL2(Z) finite index in SL2(Z)? (Modular group)
Oct 22, 2010
question
6
Arithmetic Fuchsian group
Oct 19, 2011