User Jh Wang

2 votes

1 answer

289 views

in xAct, how to set the components of a tensor to be zero

asked Mar 27, 2022 at 6:01

2 votes

1 answer

63 views

Is it possible to ContractMetric while having an unspecified dimension of the manifold

asked Jul 8 at 10:52

2 votes

1 answer

88 views

How to omit (not to display) the function arguments using TexAct package?

asked Oct 18, 2022 at 6:22

1 vote

1 answer

142 views

When doing perturbation using xPert, how to neglect higher order term of metric perturbation

asked Jun 26 at 6:53

1 vote

1 answer

64 views

Can the perturbation of the metric be treated as an tensor to validate MakeRule?

asked Jul 10 at 8:12

1 vote

1 answer

48 views

Defining a perturbation of metric which is not symmetric in lower indices in xAct

asked Sep 28 at 13:04

1 vote

1 answer

466 views

xAct : how to define f to be a function of two variables?

asked Mar 17, 2022 at 6:39

0 votes

0 answers

329 views

calculate the component of a tensor-like quantity using xCoba,and how to use ContactBasis ,TraceBasisDummy

asked Mar 9, 2022 at 4:10

0 votes

0 answers

80 views

in xAct, simplify output expression by specfic the form a function with ReplaceAll or Simplify

asked Jun 5, 2022 at 12:09

0 votes

0 answers

20 views

How to get the determinant of the metric in xAct?

asked Dec 10 at 10:09

Stack Exchange Network

10 Questions

in xAct, how to set the components of a tensor to be zero

Is it possible to ContractMetric while having an unspecified dimension of the manifold

How to omit (not to display) the function arguments using TexAct package?

When doing perturbation using xPert, how to neglect higher order term of metric perturbation

Can the perturbation of the metric be treated as an tensor to validate MakeRule?

Defining a perturbation of metric which is not symmetric in lower indices in xAct

xAct : how to define f to be a function of two variables?

calculate the component of a tensor-like quantity using xCoba,and how to use ContactBasis ,TraceBasisDummy

in xAct, simplify output expression by specfic the form a function with ReplaceAll or Simplify

How to get the determinant of the metric in xAct?