List questions from tensors

Published on 06 Jul 2020 - 18:06

783

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covariant derivatives: of contravariant vector from covariant derivative covariant vector

Published on 07 Jul 2020 - 12:52

92

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Do we need gammas to determine $\nabla$?

Published on 26 Mar 2026 - 16:57

292

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Are Lorentz-tensors tensors?

Published on 25 Mar 2026 - 20:18

371

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Why $x$ has superscript $i$ in the expression $\partial/\partial x^i$ (Differential Geometry)?

Published on 09 Jul 2020 - 1:45

151

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"Quadratic" form between a 4th order tensor and a matrix

Published on 26 Mar 2026 - 16:10

121

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How many projections $\pi: \mathbb{F}_3^2 \to \mathbb{F}_3^2 $ there?

Published on 23 Feb 2026 - 3:48

50

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Trace of generators in the bi-fundamental rep. $SO(N)$ group

Published on 29 Mar 2026 - 3:53

65

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Set of quadratic forms in compact notation

Published on 28 Mar 2026 - 19:37

127

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Indexes of tensors and simple physical applications in high school

Published on 29 Mar 2026 - 17:30

145

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Which vector $v\in \mathbb {R}^2 \otimes \mathbb {R}^2$ can be written as $p\otimes q$ for some $p,q\in\mathbb{R}^2$?

Published on 12 Jul 2020 - 23:08

46

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Contracted indices can be interchanged?

Published on 13 Jul 2020 - 3:43

87

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Tensor contraction and notational problems

Published on 23 Feb 2026 - 4:14

57

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Is there a dual basis analogue for trialities?

Published on 16 Jul 2020 - 15:46

111

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Symmetric tensor satisfying the dominant energy condition has $T^{00} \geq |T^{\alpha\beta}|$.

Published on 26 Mar 2026 - 6:21

List Question

Solving a system with tensor quantities

covariant derivatives: of contravariant vector from covariant derivative covariant vector

Do we need gammas to determine $\nabla$?

Are Lorentz-tensors tensors?

Why $x$ has superscript $i$ in the expression $\partial/\partial x^i$ (Differential Geometry)?

"Quadratic" form between a 4th order tensor and a matrix

How many projections $\pi: \mathbb{F}_3^2 \to \mathbb{F}_3^2 $ there?

Trace of generators in the bi-fundamental rep. $SO(N)$ group

Set of quadratic forms in compact notation

Indexes of tensors and simple physical applications in high school

Which vector $v\in \mathbb {R}^2 \otimes \mathbb {R}^2$ can be written as $p\otimes q$ for some $p,q\in\mathbb{R}^2$?

Contracted indices can be interchanged?

Tensor contraction and notational problems

Is there a dual basis analogue for trialities?

Symmetric tensor satisfying the dominant energy condition has $T^{00} \geq |T^{\alpha\beta}|$.

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