Anton Petrunin

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Name Anton Petrunin
Member for 2 years
Seen 1 hour ago
Website
Location PSU (State College, PA, USA)
Age 44
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."...
43

Questions
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Is a free alternative to MathSciNet possible?

apr 11 11 at 18:48 Anton Petrunin 11.2k●34●93

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One-step problems in geometry

dec 24 10 at 0:32 Gabriel Furstenheim 182●1●5

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Elementary+Short+Useful

dec 4 at 10:56 Michael Greinecker 2,707●1●10●19

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Bodies of constant width?

jan 28 at 0:58 Joseph O'Rourke 32k●1●35●152

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When shorter means smaller?

sep 12 10 at 16:44 Anton Petrunin 11.2k●34●93

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Diameter of m-fold cover

oct 29 10 at 3:57 Anton Petrunin 11.2k●34●93

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Two-convexity ⇒ Lefschetz?

feb 23 11 at 4:00 Anton Petrunin 11.2k●34●93

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Optic fibers after Joseph O’Rourke

1d ago Anton Petrunin 11.2k●34●93

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Universal group?

mar 22 at 19:03 Anton Petrunin 11.2k●34●93

1 2 3 4 5 next

 

155

Answers
votes newest views recent
83
Elementary+Short+Useful (3)
56
Which mathematicians have influenced you the most?
46
Famous mathematical quotes
30
An inequality for cosine of n
20
Can a connected planar compactum minus a point be totally disconnected?
18
Mathematical “urban legends”
18
Light rays bouncing in twisted tubes
17
Your favorite surprising connections in Mathematics
14
When does the set of isometries form a group?
14
What should be taught in a 1st course on smooth manifolds?
14
What is the defining formula for Sectional Curvature
13
Geodesics in $\mathbb{R^2} \times \mathbb{S^1}$ under “segment” metric
13
Space of metrics with positive sectional curvature
13
Why are isometries of Minkowski space necessarily linear?
13
Are there smooth bodies of constant width?
12
The Symmetry of a Soccer Ball
12
Tetrahedron splitting/subdivision
12
Surfaces all of whose geodesics are both closed and simple
12
Rolle’s theorem in n dimensions
12
Down-To-Earth Uses of de Rham Cohomology to Convince a Wide Audience of its Usefulness
11
Gromov-Hausdorff distance between p-adic integers.
11
Convex hull on a Riemannian manifold
11
Are all polynomial inequalities deducible from the trivial inequality?
11
Feasibility of a list of prescribed distances in R^3
11
Is every smooth function Lebesgue-Lebesgue measurable?
11
Is every nonnegatively curved plane conformal to the complex plane?
10
Maximal area coverable by $k$ disjoint isosceles triangles contained in a triangle of area 1.
10
Why is the half-torus rigid?
10
Volume inequality between projections of a convex symmetric set in $\mathbb R^3$
10
Helix translates as geodesics
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