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Gomes93
  • Member for 5 years, 11 months
  • Last seen more than a week ago
  • Brazil
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question
3
Let $T$ be a maximal torus of $SU(k+1)$. Who is the normalizer $N(T)$ of $T$ in $O(2k+2)$?
Jul 3, 2020
question
2
Show that if $\Theta$ is an infinitesimal weight of a real $T$-module $W$ ($T$ is a torus) then $-\Theta$ is also a weight
Jan 28, 2019
question
2
Automorphisms of $G/Z(G)$ with $G$ simply connected
Feb 24, 2021
question
1
Let $G'\triangleleft G<\operatorname{Iso}(M)$ be a normal subgroup. A $G'$-stratum is the union of $G$-strata of lesser dimension
Jul 5, 2020
question
1
A compact Lie group $G$ acting on a compact Lie group $K$ transitively. Is there a $C$ such that $d(gx,gy)\leq Cd(x,y)$?
Jul 26, 2023
question
1
What does $\nabla^i f$ mean?
Oct 3, 2023
question
0
Diffeomorphisms that let the Haar measure invariant and null divergent
May 23
answer
0
Let $G'\triangleleft G<\operatorname{Iso}(M)$ be a normal subgroup. A $G'$-stratum is the union of $G$-strata of lesser dimension
Jul 6, 2020
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12
Can ring homomorphisms be characterized as ring maps such that preimage of any ideal is an ideal?
12
Prove that $\operatorname{Hom}_{\Bbb{Z}}(\Bbb{Q},\Bbb{Z}) = 0$ and show that $\Bbb{Q}$ is not a projective $\Bbb{Z}$-module.
7
Matrix Representation of Octonions
7
$p$ is a homogeneous polynomial. Show that $p^{-1}(a)$ is a submanifold of $\mathbb{R}^n$ if $a\neq 0$. The submanifolds of $a>0$ are diffeomorphic.
6
How to prove that the set is not a regular surface?