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Distinguishing congruence subgroups of the modular group

aug 26 10 at 16:37 David Corwin 6,730●23●56

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Describing global sections of sheafifications

jul 11 10 at 14:19 Peter LeFanu Lumsdaine 2,645●8●19

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Transformation formulae for classical theta functions

apr 23 10 at 13:22 MathOverflow♦ 1●2●3