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DOI：10.4310/HHA.2026.v28.n1.a10.png)
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Abstract
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In this paper, we study operations on functors in the category of abelian groups similar to the derivation in the sense of Dold-Puppe. They are defined as derived limits of a functor applied to the relation subgroup over a category of free presentations of the group. The integral homology of the Eilenberg-MacLane space K(Z, 3) appears as a part of description of these operations applied to symmetric powers.
Keywords:
homological algebra
derived functor
higher limit
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H
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