I want to find an example of an infinitely generated discrete subgroup of ${\rm SL}(2,\Bbb R)$ but I haven't managed to find such a subgroup.
Please would someone help me to find such subgroup?
2026-03-27 10:09:55.1774606195
Find an example of an infinitely generated discrete subgroup of ${\rm SL}(2,\Bbb R)$.
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