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Questions
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Can a non-trivial action of a connected group on a reduced scheme be trivial on a dense open?

jul 5 at 20:37 Anton Geraschenko♦♦ 13.7k●3●48●108

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Can continuity of a function be checked by restricting to smooth curves?

jun 8 at 3:33 fedja 19.4k●2●46●94

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Does smoothness descend along flat morphisms?

aug 31 at 21:08 Qing Liu 8,585●17●26

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Are “fpqc algebraic spaces” algebraic spaces?

oct 9 11 at 0:22 Anton Geraschenko♦♦ 13.7k●3●48●108

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Wanted: example of a non-algebraic singularity

sep 28 11 at 22:40 Joël 9,459●19●52

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Do simplicial toric varieties have “lots” of base point free linear systems?

aug 23 11 at 18:05 Anton Geraschenko♦♦ 13.7k●3●48●108

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Is there always a toric isomorphism between isomorphic toric varieties?

mar 1 12 at 0:09 Gjergji Zaimi 37.4k●2●72●149

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If the total Chern class of a vector bundle factors, does it have a sub-bundle?

may 16 11 at 10:14 Tom Goodwillie 26.6k●2●58●110

 
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Can cones (toric monoids) be built as colimits of their faces?

sep 20 11 at 6:03 Anton Geraschenko♦♦ 13.7k●3●48●108

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Is an affine “G-variety” with reductive stabilizers a toric variety?

apr 19 11 at 0:45 Anton Geraschenko♦♦ 13.7k●3●48●108

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