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olivier dot begassat dot cours at gmail dot com


2d
answered Suppose $f(z)$ is entire and $|f(z)| >1 ,$ when $|z|>1.$ Prove that $f(z)$ is a polynomial.
Sep
10
answered Loop spaces have the homotopy type of a topological groups
Sep
10
asked Loop spaces have the homotopy type of a topological groups
Aug
28
answered Are there counter intuitive interpretations of ZF or ZFC?
Aug
28
answered An element of $SL(2,\mathbb{R})$
Aug
5
answered $SL (2, K)$ matrix conjugated by $GL(2,K)$
Jul
26
answered Flat connection with non-trivial holonomy? I cannot get it
Jul
20
answered $\exp(\ln(x))=x$ and $\ln(\exp(y))=y$.
Jul
18
answered Product of T1 spaces is T1
Jul
18
answered How is $\text{End}(M)$ a ring?
Jul
17
answered Ext functor commutes with connecting homomorphisms?
Jul
3
answered Is the Reversion map in Geometric Algebra well-defined?
Jun
26
answered Interpretation of $p$-forms
Jun
23
answered $SL(V)$ and $PSL(V)$ act $k$-transitively on the space of all $1$-dimensional subspaces.
Jun
22
answered Trying to understand formula for counting regions of hyperplane arrangements in $\mathbb{R}^2$
Jun
22
answered Symmetry of Grassmanians
Jun
21
asked $\exp(\ln(x))=x$ and $\ln(\exp(y))=y$.
Jun
21
answered If $f:\mathbb{R}^n \times \mathbb{R}^m \to \mathbb{R}^p$ is a bilinear function, then how to show that
Jun
17
answered The property of an integral manifold of differential form
Jun
17
answered Measurability of a function in $\mathcal{B}(\mathcal{C}([0,1],\mathbb{R}))$