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olivier dot begassat dot cours at gmail dot com


Aug
16
comment Definition of a parallelizable manifold
They surely are isomorphic as sets, but generally not as vector bundles. Parallelizability implies that there exists at least one nowhere vanishing section (actually $n$ everywhere linearly independent sections), but you will not find such a section for the 2 sphere for instance.
Aug
13
comment Continuous functions on compact Hausdorff space.
You don't need the Hausdorff property.
Aug
5
answered $SL (2, K)$ matrix conjugated by $GL(2,K)$
Aug
5
comment $SL (2, K)$ matrix conjugated by $GL(2,K)$
You will have to give us a precise statement though... Which determinant one matrices are you actually considering?
Aug
5
comment $SL (2, K)$ matrix conjugated by $GL(2,K)$
What about the identity matrix?
Aug
4
reviewed Close Obtaining the PMF for a product of binomial distributions
Aug
2
comment Univalent functions have simple poles
What have you tried? Do you see why it should be true?
Aug
2
reviewed Approve suggested edit on Trigonometric integral evaluation: $\int 4 \sin^4 x \cos^3 x \,dx$
Jul
31
reviewed Reject suggested edit on A question about Markov
Jul
31
reviewed Approve suggested edit on how to get the answer for the following integration?
Jul
31
reviewed Close When is the localization of a module trivial?
Jul
31
reviewed Close Functions, finding related formula
Jul
31
reviewed Close To control first derivative with the function itself.
Jul
31
reviewed Close How to prove that $p^k|ab$ if and only if $p^k|a$ and $p^k|b$?
Jul
31
reviewed Close partnership calculation
Jul
31
reviewed Close How to find right coset
Jul
31
reviewed Close Lebesgue's Measure
Jul
31
reviewed Close analysis of Sequences and subsequence.
Jul
31
reviewed Close A multiple choice question on finite group
Jul
31
reviewed Close Squares of Complex numbers