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# Questions

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### Does there exist a finite-index subgroup of SL2Z with all cusps irregular?

nov 25 11 at 2:47 Richard Kent 8,52522958

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### Identifying finite-index subgroups of SL2Z from generators

nov 29 11 at 11:04 Mark Sapir 27.7k257118

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### Torsion points of CM elliptic curves

dec 7 11 at 8:39 Dror Speiser 3,9321734

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### When do the Galois reps of modular forms have open image?

may 10 10 at 10:51 TG 725311

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### Existence of multi-variable p-adic L-functions

mar 9 10 at 12:20 David Loeffler 8,6231540

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### Do Tamagawa numbers of Galois representations stabilise in the cyclotomic tower?

may 19 11 at 20:50 David Loeffler 8,6231540

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### Can an etale (phi, Gamma) module be an extension of non-etale ones?

oct 24 10 at 11:29 David Loeffler 8,6231540

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### Is the $\ell$-adic cohomology of a non-proper variety unramified at good primes?

jun 18 at 22:31 David Helm 41824

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### Does the Manin-Drinfeld theorem hold over number fields?

mar 14 at 12:37 Yuri Zarhin 2,214411

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