Question

Sagemath -- finding Eigenvalues of a matrix representation of a tensor

score 42 · Answer 1 · 2026-03-26 09:16:24

42

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Sagemath -- finding Eigenvalues of a matrix representation of a tensor

Published on 26 Mar 2026 - 9:16

score 108 · Answer 2 · 2023-06-02 21:28:19

108

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score 644 · Answer 3 · 2023-06-16 07:35:33

644

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Published on 16 Jun 2023 - 7:35

score 45 · Answer 4 · 2023-06-21 14:57:49

45

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Time derivative of Christoffel symbols

Published on 21 Jun 2023 - 14:57

score 34 · Answer 5 · 2023-06-23 16:50:49

34

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Published on 23 Jun 2023 - 16:50

score 76 · Answer 6 · 2023-06-25 11:36:51

76

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A fully evaluated tensor is a smooth function, so why does using the Leibniz rule give a bunch of Gammas?

Published on 25 Jun 2023 - 11:36

score 49 · Answer 7 · 2026-03-25 23:19:53

49

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Laplace-Beltrami operator in coordinates

Published on 25 Mar 2026 - 23:19

score 39 · Answer 8 · 2026-03-25 23:21:31

39

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Why is $\text{Ric}(g)=0$ a quasi-linear PDE in harmonic coordinates?

Published on 25 Mar 2026 - 23:21

score 141 · Answer 9 · 2023-07-02 15:38:56

141

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score 24 · Answer 10 · 2023-07-04 14:27:29

24

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score 26 · Answer 11 · 2023-07-04 01:09:19

26

Views

How to relate a derivative in tortoise coordinates with the radial coordinate?

Published on 04 Jul 2023 - 1:09

score 25 · Answer 12 · 2023-07-06 08:47:30

25

Views

Deriving an expression for the wave operator acting on the gravitational spinor: $\square \Psi_{ABCD} = 6\Psi_{EF(AB} \Psi_{CD)}{}^{EF}$

Published on 06 Jul 2023 - 8:47

score 49 · Answer 13 · 2023-07-06 21:51:10

49

Views

Optical geometry in GR: How can the "vanishing of the line element" define a submanifold?

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score 15 · Answer 14 · 2026-03-05 09:36:09

15

Views

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score 76 · Answer 15 · 2023-08-18 19:17:31

76

Views

Curvature invariants of hyperbolic space forms

Published on 18 Aug 2023 - 19:17

List Question

Sagemath -- finding Eigenvalues of a matrix representation of a tensor

Is there a method to find the length of a geodesic length from its parameterisation and 'velocity'?

Necessary and sufficient mathematical structure for spacetime continuum

Time derivative of Christoffel symbols

Curvature of an affine system

A fully evaluated tensor is a smooth function, so why does using the Leibniz rule give a bunch of Gammas?

Laplace-Beltrami operator in coordinates

Why is $\text{Ric}(g)=0$ a quasi-linear PDE in harmonic coordinates?

Is M/SO(3) a manifold when the orbits are spheres?

Is a globally hyperbolic spacetime past causal geodesic complete?

How to relate a derivative in tortoise coordinates with the radial coordinate?

Deriving an expression for the wave operator acting on the gravitational spinor: $\square \Psi_{ABCD} = 6\Psi_{EF(AB} \Psi_{CD)}{}^{EF}$

Optical geometry in GR: How can the "vanishing of the line element" define a submanifold?

Approximation of pressure gradient term in relativistic hydrodynamics equations to calculate vertical height of a thin rotating flow

Curvature invariants of hyperbolic space forms

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