List questions from symmetry

Published on 28 Mar 2026 - 15:19

269

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An attempt to revisit the criticality of the Navier-Stokes Equation

Published on 12 Jan 2021 - 17:24

111

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Is there a 3D shape that is infinitely rotationally symmetrical in exactly 2 axis?

Published on 25 Mar 2026 - 17:39

66

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Symmetric vs Symmetrical

Published on 15 Jan 2021 - 19:41

70

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Representation of the action of $ S_3 $ on $ (1,2,-3) \in M$ On the plane

Published on 16 Jan 2021 - 17:42

117

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Rigorous proof that $E(X|X+Z) = E(Y|Y+Z)$ when $X, Y, Z$ are independent and $X\overset{d}{=} Y$

Published on 16 Jan 2021 - 21:55

55

Views

Fourier Transform Symmetry Misunderstanding

Published on 18 Jan 2021 - 1:13

67

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Divisibility Rule for 21 similar to rule for 12

Published on 20 Jan 2021 - 19:52

147

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Shapes with $7$ lines of symmetry

Published on 21 Jan 2021 - 14:21

311

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Is every subgroup of $\mathrm{Isom}(\mathbb{R}^n)$ a semidirect product $T \rtimes Q$?

Published on 30 Mar 2026 - 9:55

224

Views

Half wave, quarter wave symmetry

Published on 23 Feb 2026 - 22:20

91

Views

Can each edge of a Wythoffian polytope be flipped by a reflection?

Published on 27 Mar 2026 - 16:53

444

Views

Retrying Leray: new solutions to Navier-Stokes

Published on 24 Jan 2021 - 2:12

416

Views

$T \cdot W=0$ for every skew symmetric tensor $T$ implies that $T$ is a symmetric tensor

Published on 26 Jan 2021 - 11:16

68

Views

Twisted ribbons and centre of gravity

Published on 24 Feb 2026 - 2:19

List Question

Which reflection groups contain central inversion?

An attempt to revisit the criticality of the Navier-Stokes Equation

Is there a 3D shape that is infinitely rotationally symmetrical in exactly 2 axis?

Symmetric vs Symmetrical

Representation of the action of $ S_3 $ on $ (1,2,-3) \in M$ On the plane

Rigorous proof that $E(X|X+Z) = E(Y|Y+Z)$ when $X, Y, Z$ are independent and $X\overset{d}{=} Y$

Fourier Transform Symmetry Misunderstanding

Divisibility Rule for 21 similar to rule for 12

Shapes with $7$ lines of symmetry

Is every subgroup of $\mathrm{Isom}(\mathbb{R}^n)$ a semidirect product $T \rtimes Q$?

Half wave, quarter wave symmetry

Can each edge of a Wythoffian polytope be flipped by a reflection?

Retrying Leray: new solutions to Navier-Stokes

$T \cdot W=0$ for every skew symmetric tensor $T$ implies that $T$ is a symmetric tensor

Twisted ribbons and centre of gravity

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