Διάσταση αναπαράστασης, πρότυπα Cohen-Macaulay και τριγωνισμένες κατηγορίες
Περίληψη σε άλλη γλώσσα
In this thesis we investigate homological invariants arising in the representation theory of Artin algebras. The main focus of our study is on the representation and finitistic/global dimension of Artin algebras, the class of Cohen-Macaulay modules and the Rouquier dimension of triangulated categories. The proper conceptual framework, from our perspective, for this study is the general setting of recollements of abelian categories, a concept which is fundamental in Algebra, Geometry and Topology, and the closely related omnipresent class of Morita rings. Our aim is to investigate homological aspects of recollements of abelian categories and to study Morita rings in the context of Artin algebras, concentrating mainly at representation-theoretic and homological aspects. Moreover we classify recollements of abelian categories whose terms are module categories, thus solving a conjecture by Kuhn. Our interest in recollements is motivated from questions and problems on representation and fin ...
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