Olivier Bégassat

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3,434 reputation

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visits	member for	1 year, 11 months
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95 Answers

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14	Simple group of order $660$ is isomorphic to a subgroup of $A_{12}$
9	Is it possible for a closed manifold to deformation retract onto a proper subset of itself?
9	Example of nonvanishing vector field on SLn(R)
7	If $G$ is a group with order $364$, then it has a normal subgroup of order $13$
7	Is the action transitive?

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3,434 Reputation

+45	Show that $[l_1 \cdot l_2 \cdot l_3 ] = [l_1 + l_2 + l_3] \in H_1(X)$ The first Homology group of X
+30	The smallest nontrivial conjugacy class in $S_n$
+10	Cases where characteristic and minimum polynomial coincide
+10	Homology of $S^1 \times (S^1 \vee S^1)$

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30 Questions

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15	Question about Milnor's talk at the Abel Prize
13	Shrinking Group Actions
10	Use of Reduced Homology
9	Is this (classical?) exercice missing a hypothesis?
9	Reducibility of $P(X^2)$

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97 Tags

42 group-theory × 10	21 functional-analysis × 6
32 abstract-algebra × 8	19 general-topology × 13
30 algebraic-topology × 17	18 sequences-and-series × 7
29 linear-algebra × 14	17 homework × 8
21 differential-geometry × 10	15 convergence × 5

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2 Accounts

$Mathematics Stack Exchange$	Mathematics	3,434 rep	621
$TeX - LaTeX Stack Exchange$	TeX - LaTeX	145 rep	5

23 Badges

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Nice Question × 4	Investor
Caucus × 2	Organizer
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Civic Duty	Nice Answer
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451 Votes Cast

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