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Questions
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Is Mac Lane still the best place to learn category theory?

dec 3 at 12:39 Mozibur Ullah 806●1●7

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3
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When does the converse to Schur’s Lemma hold?

sep 17 at 20:41 David White 4,838●1●20●27

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What is the first interesting matric Toda bracket in the stable homotopy of the sphere?

jun 20 at 13:02 cdouglas 1,803●7●20

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Is the 4-line of the E_2 term of the classical Adams spectral sequence known?

may 29 at 7:33 Mike-Doherty 306●2●4

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Drawing of the eight Thurston geometries?

jul 7 10 at 10:57 Sam Nead 5,292●12●26

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Is there a volume conjecture for closed 3-manifolds?

mar 7 10 at 2:25 Charlie Frohman 2,395●5●15

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355
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How do you compute the space of lifts of an E-infinity map?

feb 17 10 at 20:15 Tyler Lawson 18.7k●2●44●90

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How many embeddings are there of super-Virasoro into n Fermions?

dec 4 09 at 9:18 José Figueroa-O'Farrill 19k●2●31●93

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Reference for iterated homotopy fixed points?

nov 12 09 at 4:42 Anton Geraschenko♦♦ 13.7k●3●48●108