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D.4.7.16 kohom

Procedure from library homolog.lib (see homolog_lib).

Usage:
kohom(A,k); A=matrix, k=integer

Return:
matrix Hom(R^k,A), i.e. let A be a matrix defining a map F1-->F2 of free R-modules, then the matrix of Hom(R^k,F1)-->Hom(R^k,F2) is computed (R=basering).

Example:
 


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