Covers, envelopes, and cotorsion theories in locally presentable abelian categories and contramodule categories
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DOI: 10.1016/j.jalgebra.2017.03.029
Abstract: We prove general results about completeness of cotorsion theories and existence of covers and envelopes in locally presentable abelian categories, extending the well-established theory for module categories and Grothendieck categories. These results are then applied… read more here.
Keywords: cotorsion theories; abelian categories; presentable abelian; locally presentable ... See more keywords