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| Author(s): |
Ana Melisa Paiba Amaya
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Matemática e Estatística (IME/SBI) |
| Defense date: | 2018-10-24 |
| Examining board members: |
Eduardo do Nascimento Marcos;
Regina Maria de Aquino;
Viktor Bekkert
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| Advisor: | Eduardo do Nascimento Marcos |
| Abstract | |
The Hochschild Cohomology is an invariant attached to associative algebras which may provide us some homological aspects of the algebras and its category of modules. Moreover, it has applications to Algebraic Geometry and Representation Theory, among others areas. For algebras A over a field the Hochschild cohomology group HH^i(A,M) of A with coeficients in a bimodule M coincides with Ext^i_{A^e}(A,M). So it can be computed using a projective resolution of the algebra, as a bimodule over itself. Therefore different authors like Dieter Happel, Claude Cibils, Edward Green, David Anick, Michael Bardzell, Sergio Chohuy and Andrea Solotar developed tools for the construction of these resolutions in particular cases. A recent and very important result was introduced by Andrea Solotar and Sergio Chohuy, where they show a construction of a projective bimodule resolution for associative algebras generalizing the result for monomial algebras made by Bardzell. In this dissertation we intend to introduce the reader in the cohomology Hochschild concept, showing its importance through known results for finite dimensional algebras. Besides, we exhibit the concepts and results of Chohuy and Solotar mentioned before. During this text, we complement some demonstrations with the purpose of giving a tool for the a better understanding. (AU) | |
| FAPESP's process: | 16/09809-5 - Applications of the Groebner Basis Theory to the computation of the Hochschild cohomology |
| Grantee: | Ana Melisa Paiba Amaya |
| Support Opportunities: | Scholarships in Brazil - Master |