Anton Petrunin

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Name Anton Petrunin
Member for 3 years
Seen 7 hours ago
Website
Location PSU
Age 45
from ratemyprofessors.com:

...Just stay away from this professor, he is useless and explains nothing ... He would just call you stupid if you asked a question ... his response, in russian english, was, "If you don't know this yet, maybe you perform suicide."...

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Is it possible to capture a sphere in a knot?

feb 20 11 at 18:23 Anton Petrunin 16.4k●41●110

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Volumes of Sets of Constant Width in High Dimensions

jul 22 10 at 0:22 Greg Kuperberg 36.2k●2●116●179

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two tetrahedra in R^4

feb 16 11 at 10:45 filipm 919●4●9

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Do plane projections determine a convex polytope?

feb 13 at 17:15 Anton Petrunin 16.4k●41●110

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Diameter of symmetric group

sep 24 at 18:30 Igor Pak 8,206●2●17●57

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Is there an associative metric on the non-negative reals?

feb 26 10 at 2:18 t3suji 2,717●1●8●13

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Open map D⁴ → S²

may 10 at 6:22 MathOverflow♦ 1●2●3

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Number of subgroups in a Bieberbach group.

apr 9 11 at 2:49 Anton Petrunin 16.4k●41●110

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