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Showing 1 to 1 of 1 for “"cofibration"”.
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Un ejemplo de teoría de homotopia en los grupos abelianos
For a commutative unitary ring R, we have developed a new homotopy theory in the category of abelian groups. The homotopy category of this theory has the following property: if an abelian group A admits the structrure of an R-module, then A has the homotopy type of the zero abelian group. As a …