Timeline for Are there congruence subgroups other than $\operatorname{SL}_2(\mathbb Z)$ with exactly 1 cusp?
Current License: CC BY-SA 4.0
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| Feb 14, 2020 at 15:19 | history | edited | David E Speyer | CC BY-SA 4.0 |
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| Jan 10, 2020 at 2:06 | history | edited | David E Speyer | CC BY-SA 4.0 |
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| Jan 9, 2020 at 20:48 | history | edited | David E Speyer | CC BY-SA 4.0 |
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| Jan 9, 2020 at 17:56 | history | answered | David E Speyer | CC BY-SA 4.0 |