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In this paper we present a short overview of the new Wolfram Mathematicapackage intended for elementary "in-basis" tensor and differential-geometriccalculations. In contrast to alternatives our package is designed to beeasy-to-use, short, all-purpose, and hackable. It supports tensor contractionsusing Einstein notation, transformations between different bases, tensorderivative operator, expansion in basis vectors and forms, exterior derivative,and interior product.

SimpleTensor -- a user-friendly Mathematica package for elementary tensor and differential-geometric calculations