Questions - ASKSAGE: Sage Q&A Forum

35

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2022-08-16 19:32:45 +0200 eric_g

Sage Manifolds: Asymptotically de Sitter Spacetime in Fefferman-Graham Gauge

33

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no

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no

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2022-05-27 08:57:45 +0200 Bubbz

Coordinate chart restriction raising a floating-point-overflow error

58

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1

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no

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2022-05-23 08:17:32 +0200 eric_g

How to convert a list to components of a PseudoRiemannian metric

60

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2022-05-02 15:02:19 +0200 kva

Evaluating the tangent vector of a previously saved and loaded integrated geodesic

57

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2022-02-25 22:19:12 +0200 eric_g

conjugate of scalar field

76

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2022-01-28 14:41:12 +0200 eric_g

Tensor product of exterior power

91

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2021-12-18 17:08:58 +0200 eric_g

full metric transform

160

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1

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2

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2021-05-11 16:06:36 +0200 Florentin Jaffredo

Geodesics/tangent vector evaluation interpolation error

94

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no

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2021-04-12 06:19:54 +0200 perfectly_odd

Is there a way to compute the "correct" distributional answer, -4pidirac_delta(r), as the Laplacian of 1/r (in spherical coordinates on Euclidean space)?

87

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2021-04-08 09:55:39 +0200 eric_g

Is there a built-in way to integrate a vector or differential form field on an embedded submanifold of Euclidean space?

120

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2021-04-03 16:46:21 +0200 slelievre

Coordinate charts, functions of one coordinate as bounds of another(?)

141

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4

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2021-03-30 16:32:33 +0200 Florentin Jaffredo

Integrating geodesics backwards in time

118

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1

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no

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2021-02-02 08:59:18 +0200 eric_g

Displaying all symbolic expression with ExpressionNice

129

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1

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no

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2021-02-02 08:50:57 +0200 eric_g

latex_name and derivatives in sagemanifolds

106

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1

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no

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2020-12-04 16:55:46 +0200 slelievre

manifolds: antisymmetrize a tensor field creates a vector field instead of a tensor field [closed]

119

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1

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no

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2020-11-07 16:25:46 +0200 eric_g

Why does manifold not have a volume form?

sagemanifolds

136

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1

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no

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2020-09-05 14:02:29 +0200 eric_g

Typo in Sagemanifolds worksheet ? [closed]

122

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2

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2020-08-28 11:26:26 +0200 eric_g

When affine_connection is empty

sagemanifolds

61

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no

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no

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2020-08-25 22:12:29 +0200 danielvolinski

Error when I had some show commands

sagemanifolds

124

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1

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1

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2020-08-12 23:44:10 +0200 eric_g

Sagemanifolds display has deteriorated

sagemanifolds

232

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no

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1

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2020-07-10 06:14:08 +0200 wintermute

Defining $S^1$ with four charts

185

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1

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1

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2020-05-31 15:37:39 +0200 eric_g

abstract index notation and differential geometry

175

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1

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1

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2020-04-30 10:00:00 +0200 eric_g

Multiprocess hangs

220

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1

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2

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2020-04-27 17:07:37 +0200 mocalvao

metric perturbations on Sagemanifolds

sagemanifolds

103

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1

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1

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2020-04-02 18:32:55 +0200 eric_g

weyl, symmetrize and antisymmetrize functions provide error

145

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2

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1

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2020-02-14 23:26:28 +0200 rburing

Can't substitute H=dot(a)/a in SageMath

175

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1

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1

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2020-02-13 10:34:31 +0200 rburing

Lie bracket of derivations over polynomial ring

145

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1

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2

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2020-01-28 14:58:01 +0200 eric_g

Symbolic Differential Equation Substitution

129

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1

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1

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2020-01-18 00:06:25 +0200 rburing

Unable to use substitute_function in SageManifolds

259

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1

answer

1

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2019-11-29 00:05:20 +0200 eric_g

Check if a curve is a geodesic

sagemanifolds

66 questions

Sage Manifolds: Asymptotically de Sitter Spacetime in Fefferman-Graham Gauge

Coordinate chart restriction raising a floating-point-overflow error

How to convert a list to components of a PseudoRiemannian metric

Evaluating the tangent vector of a previously saved and loaded integrated geodesic

conjugate of scalar field

Tensor product of exterior power

full metric transform

Geodesics/tangent vector evaluation interpolation error

Is there a way to compute the "correct" distributional answer, -4pidirac_delta(r), as the Laplacian of 1/r (in spherical coordinates on Euclidean space)?

Is there a built-in way to integrate a vector or differential form field on an embedded submanifold of Euclidean space?

Coordinate charts, functions of one coordinate as bounds of another(?)

Integrating geodesics backwards in time

Displaying all symbolic expression with ExpressionNice

latex_name and derivatives in sagemanifolds

manifolds: antisymmetrize a tensor field creates a vector field instead of a tensor field [closed]

Why does manifold not have a volume form?

Typo in Sagemanifolds worksheet ? [closed]

When affine_connection is empty

Error when I had some show commands

Sagemanifolds display has deteriorated

Defining $S^1$ with four charts

abstract index notation and differential geometry

Multiprocess hangs

metric perturbations on Sagemanifolds

weyl, symmetrize and antisymmetrize functions provide error

Can't substitute H=dot(a)/a in SageMath

Lie bracket of derivations over polynomial ring

Symbolic Differential Equation Substitution

Unable to use substitute_function in SageManifolds

Check if a curve is a geodesic

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