11

Questions
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What is the motivation for a vertex algebra?

feb 2 11 at 14:46 Richard Borcherds 14.1k●2●54●82

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How were moduli spaces defined before functors?

nov 17 at 22:46 David Corwin 6,730●23●56

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Motivation/interpretation for Quillen’s Q-construction?

dec 11 11 at 15:20 John Klein 7,103●19●28

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5
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Nice proofs of the Poincaré–Birkhoff–Witt theorem

feb 6 at 16:19 David Jordan 4,080●7●23

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14
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4
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What is an example of a presheaf P where P^+ is not a sheaf, only a separated presheaf?

jul 15 10 at 21:55 Dylan Wilson 3,856●2●14●36

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2
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Notes for Bott’s 1963 lectures on Morse theory

dec 13 at 12:27 David Farris 81●3

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338
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Doing explicit computations with coordinate rings

feb 20 11 at 22:39 Karl Schwede 11.3k●1●14●35

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4
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Techniques for computing cup products in singular cohomology

may 14 11 at 19:28 Peter May 12k●1●38●54

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4
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For which hypersurfaces in projective space does the complement admit an algebraic group structure?

jun 14 11 at 0:34 Bhargav 1,163●5●6

 
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Example of a measure-preserving system with dense orbits that is not ergodic

sep 1 11 at 19:26 Anthony Quas 6,260●1●12●28

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