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Macaulay2Doc :: ChainComplex ** ChainComplex

ChainComplex ** ChainComplex -- tensor product



C**D -- the tensor product of two chain complexes.

The result, E, is a chain complex. Each module E_k in it is a direct sum of modules of the form C_i**D_j with i+j=k, and the preferred keys for the components of this direct sum are the pairs (i,j), sorted increasing values of i. For information about how to use preferred keys, see directSum.