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jose's user avatar
jose's user avatar
jose
  • Member for 10 years, 8 months
  • Last seen this week
  • Champaign, IL, United States
2 votes

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

1 vote
Accepted

Compute curvature tensor constructed by a shifted connection

3 votes

AscendingNodeLongitude for the Moon at a given date

4 votes
Accepted

Varying Einstein-Hilbert action through xAct gives extra terms

2 votes
Accepted

Handling different kind of indices in single tensor equation

2 votes
Accepted

By what criteria does Mathematica generate the list of group elements in `GroupElements[group]`?

14 votes
Accepted

How can I show the relative size of two GeoGraphics objects?

3 votes

A problem about the integration of blackbody radiation law using FormulaData. QuantityVariable limits

3 votes
Accepted

Why are Christoffels vanishing depending on choice of basis (xAct)?

3 votes
Accepted

Evaluating covariant derivative terms of a scalar function (xAct, xTras)

2 votes

Define Conformal Metric in xAct

0 votes

"Symmetrize" shall symmetrize only tensor values $\ne 0$

2 votes

Distance to the ocean

4 votes
Accepted

Symmetric product

4 votes
Accepted

xAct rule for antisymmetrization

2 votes
Accepted

xAct define normalization

3 votes
Accepted

Commutation of the partial derivatives on scalar in xAct

3 votes

Counting multiple $-sign string indices in output and replacing them by normal indices

1 vote

xAct: How to identify and split module dummy indices?

4 votes
Accepted

Define functions on Geographic regions

7 votes
Accepted

Easiest way to obtain MeshRegion from CountryData

2 votes

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

6 votes
Accepted

Create a tensor with a well defined symmetry

1 vote
Accepted

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

2 votes

Location of the point on Earth with the Sun at the zenith

1 vote

Simple and efficient construction of tensor product operators

3 votes
Accepted

xAct xCoba: How to extract components of CTensors correctly

3 votes
Accepted

Dealing with covariant derivatives (xCoba)

2 votes

Format data consistently with Around

3 votes

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