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Doctoral Thesis
DOI
https://doi.org/10.11606/T.55.2019.tde-12082019-101725
Document
Author
Full name
Liliam Carsava Merighe
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2019
Supervisor
Committee
Pérez, Victor Hugo Jorge (President)
Levcovitz, Daniel
Miranda Neto, Cleto Brasileiro
Ramos, Zaqueu Alves
Title in English
On properties about local cohomology modules, finiteness of torsion and extension functors, and integral closure relative to Artinian modules
Keywords in English
Attached primes
Generalized local cohomology
Homological algebra
Integral closure
Multiplicity
Abstract in English
Let R be a non-zero commutative Noetherian ring with unit 1 ≠ 0, a be an ideal of R, and M and N be R-modules. This thesis makes a contribution to the study of generalized local cohomology modules, namely Hia (M;N), with applications for the study of attached primes, torsion product and extension functors, and integral closures and multiplicities relative to Artinian modules. In particular, we obtained results on the following topics: counting the number of non-isomorphic top generalized local cohomology modules, conditions to finiteness, cofiniteness, artinianess and representability of generalized local cohomology modules, torsion product and extension functors applied to R-modules, and conditions to equality between some types of integral closures and multiplicities.
Title in Portuguese
Propriedades sobre módulos de cohomologia local, finitude dos funtores torção e extensão, e fecho integral relativo a módulos Artinianos
Keywords in Portuguese
Álgebra homológica
Cohomologia local generalizada
Fecho integral
Multiplicidade
Primos anexados
Abstract in Portuguese
Sejam R um anel Noetheriano comutativo com unidade 1 ≠ 0, a um ideal de R e M e N módulos sobre R. Nessa tese, fazemos contribuições ao estudo dos módulos de cohomologia local generalizada, a saber Hia (M;N), com aplicações ao estudo dos ideais primos anexados de R, funtores torção e extensão, e fecho integral e multiplicidades relativos a módulos artinianos. Em particular, estabelecemos resultados nos seguintes temas: contar o número de módulos de cohomologia local generalizados no topo não isomorfos; condições para os módulos de cohomologia local e os funtores torção e extensão aplicados a R-módulos terem características finitas (finitamente gerado, finitos primos associados, etc), serem cofinitos, serem artinianos e serem representáveis; e condições para a igualdade entre tipos de fechos integrais e multiplicidades.
 
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Publishing Date
2019-08-12
 
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