A~category of matrices representing two categories of Abelian groups

A. A. Fomin

Fundamentalʹnaâ i prikladnaâ matematika, Tome 13 (2007) no. 3, pp. 223-244.

Résumé

Every $\tau$-adic matrix represents both a quotient divisible group and a torsion free finite-rank group. These representations are an equivalence and a duality of categories, respectively.

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