Mathematica Looking for packages for tensor calculation in Mathematica

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The discussion revolves around tensor calculations involving operations like contraction and index manipulation. The user has attempted to use the Ricci.m package from the University of Washington but encountered compatibility issues with Mathematica version 12 due to the package's lack of recent updates. They are seeking alternative packages for tensor calculations and mention the Tensorial package as a potential option, providing a link to its demo. The focus is on finding reliable and updated tools for performing tensor operations in Mathematica.
Haorong Wu
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Need packages for tensor calculation in differential geometry for mathematica
Hello. I am doing tensor calculation with indices, such as contraction, lowering or raising indices, tensor production, etc.

I have tried the Ricci.m from https://sites.math.washington.edu/~lee/Ricci/

However, maybe because the package has not been upgraded for some time, I could not get the proper output in Mathematica v12.

Do you know other package? Thanks!
 
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