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jose's user avatar
jose's user avatar
jose's user avatar
jose
  • Member for 10 years, 7 months
  • Last seen this week
  • Champaign, IL, United States
6 votes
Accepted

How to plot countries with accurate area?

6 votes

How to generate all $ 3 \times 3 $ matrices with $ a,a,a,a,b,b,b,c,c $?

5 votes

Converting from UPS(x, y) to geodetic latitude/longitude

5 votes

Append a function of an expression as operator form using Curry?

5 votes
Accepted

Change of basis for a rank 3 Cartesian tensor

5 votes

How to distribute PermutationProduct over the sum

5 votes

Efficient tensor product followed by contraction

5 votes
Accepted

How to split a SymmetricGroup into some PermutationGroup with smaller GroupOrder

5 votes
Accepted

Is GeoElevationData[] inconsistent?

5 votes
Accepted

How to delete duplicate graphics of the same kind?

4 votes

How to create a symmetric symbolic tensor?

4 votes
Accepted

Self loop on CityData graph?

4 votes
Accepted

Define functions on Geographic regions

4 votes
Accepted

xAct rule for antisymmetrization

4 votes
Accepted

Symmetric product

4 votes
Accepted

Varying Einstein-Hilbert action through xAct gives extra terms

4 votes
Accepted

How to just get the elevation data of Berlin by GeoElevationData

4 votes
Accepted

Convert single index into the multiple indices of a tensor product basis

4 votes
Accepted

How does GroupActionBase affect the order of elements in a group?

4 votes
Accepted

What is the underlying algorithm for GroupElementToWord?

4 votes

I need to make and manipulate a group ( the quaternion)

4 votes

How to make a world map with a coloured ocean and transparent land surface?

4 votes

Generate list of tuples, modulo PermutationGroup

4 votes
Accepted

How to Creat a Symbolic Rank 4 Symmetric tensor

4 votes

How to work with Levi civita tensor in xAxt?

4 votes

How to calculate arbitrary area on surface of sphere?

3 votes

use CTensor to define new tensor

3 votes
Accepted

Error of Points in Mollweide Projection

3 votes

How to compute functional derivative against vector in xAct, xTensor or xTras?

3 votes
Accepted

Hammer projection to rectangular