List questions from invariant-theory

Published on 11 Apr 2026 - 19:08

155

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Invariants restricting possible similarity matrices to only permutations for graph isomorphism problem?

Published on 16 Apr 2026 - 15:07

86

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Parabolic Subgroup P and subspaces that are left invariant by P

Published on 15 Apr 2026 - 21:49

55

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Proof - Possibility to transform all vertex’s value to 1

Published on 10 Apr 2026 - 22:38

236

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Stable points in a GIT quotient

Published on 10 May 2026 - 17:40

99

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Ring of invariants of unimodular matrices acting on real square matrices

Published on 03 May 2026 - 1:47

40

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The invariant ring $S(\mathfrak{h})^W$ in bad characteristic

Published on 13 Apr 2026 - 9:32

67

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$\mathbb{C}[x_1, \dots, x_n]^G \cong \mathbb{C}[x_1, \dots, x_n]^H$ with $G$ and $H$ small implies $G \cong H$?

Published on 17 Apr 2026 - 11:44

67

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Strange product of groups

Published on 30 Apr 2026 - 11:03

229

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Can all 3 vector products $\left(\sum_i v_i u_i w_i\right)$ define linear subspace modulo permutation of coordinates?

Published on 16 Apr 2026 - 13:14

47

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Invariant ring mod $p^n$

Published on 15 Apr 2026 - 21:11

48

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Find $\mathbb C[x,y,z]^{S_3}$ using Hilbert's Basis Theorem?

Published on 14 Apr 2026 - 22:34

65

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Lie group invariants: are they infinitely differentiable?

Published on 14 Apr 2026 - 19:52

112

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$G$-invariant divisor in affine space

Published on 10 May 2026 - 11:40

347

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Invariant functions under integral transforms

Published on 11 Apr 2026 - 6:22

List Question

Does this easier method to find the invariant lines of a transformation always work?

Invariants restricting possible similarity matrices to only permutations for graph isomorphism problem?

Parabolic Subgroup P and subspaces that are left invariant by P

Proof - Possibility to transform all vertex’s value to 1

Stable points in a GIT quotient

Ring of invariants of unimodular matrices acting on real square matrices

The invariant ring $S(\mathfrak{h})^W$ in bad characteristic

$\mathbb{C}[x_1, \dots, x_n]^G \cong \mathbb{C}[x_1, \dots, x_n]^H$ with $G$ and $H$ small implies $G \cong H$?

Strange product of groups

Can all 3 vector products $\left(\sum_i v_i u_i w_i\right)$ define linear subspace modulo permutation of coordinates?

Invariant ring mod $p^n$

Find $\mathbb C[x,y,z]^{S_3}$ using Hilbert's Basis Theorem?

Lie group invariants: are they infinitely differentiable?

$G$-invariant divisor in affine space

Invariant functions under integral transforms

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