Talk:J-line
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Untitled[edit]
I've tried to add a bit to the article -- it wasn't so clear to me what the relation to congruence subgroups was meant to be, or what was meant to represent -- unfortunately the cited reference is several hundred pages! So I've left this alone for now, but it should be clarified.
Dzackgarza (talk) 19:58, 22 March 2022 (UTC)