SINGULAR: classifyMapGerms_lib. A library for computing the standard basis of the tangent space at the orbit of an algebraic group action. The tangent space is usually described as the sum of two modules over different rings. It computes the standard basis using modular methods and parallel modular methods. It also computes the normal form of the germ given by Riegers classification.

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  1. Binyamin, Muhammad Ahsan; Mahmood, Hasan; Kanwal, Shamsa: On the classification of simple maps from the plane to the plane (2017)