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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2021.tde-11082021-113531
Document
Author
Full name
Daniel Alberto Aguilar Alvarez
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2021
Supervisor
Committee
Pérez, Victor Hugo Jorge (President)
Miranda Neto, Cleto Brasileiro
Saia, Marcelo José
Tomazella, João Nivaldo
Title in English
Cohomology of quasi-coherent sheaves over projective schemes
Keywords in English
Local cohomology
Projective scheme
Quasi- coherent sheaf
Sheaf cohomology
Abstract in English
The objective of this work is to present the reader with the study of some mathematical tools used in current problems of algebraic geometry, assuming only some knowledge in algebra and topology. We treat basic concepts and results in the theory of sheaves and schemes that we later use to understand the correspondence between local cohomology and sheaf cohomology of quasi-coherent sheaves over projective schemes. Then, with this background we are able to state some open problems that are related to the Hilbert polynomial and to the Castelonuovo-Mumford regularity of a coherent sheaf.
Title in Portuguese
Cohomologia de feixes quasi-coherentes sobre esquemas projetivos
Keywords in Portuguese
Cohomologia de feixes
Cohomologia local
Esquema projetivo
Feixe quasi-coherente
Abstract in Portuguese
O objetivo deste trabalho é apresentar ao leitor o estudo de algumas ferramentas matemáticas utilizadas nos problemas atuais da geometria algébrica, pressupondo apenas alguns conhecimentos em álgebra e topologia. Expõe conceitos e resultados básicos na teoria de feixes e esquemas, que logo são usados para entender a correspondência que existe entre a cohomologia local e a cohomologia de feixes, no caso de feixes quasi-coherentes sobre esquemas projetivos. Finalmente enunciamos alguns problemas em aberto relacionados com o polinômio de Hilbert e a regularidade de Castelonuovo-Mumford de um feixe coherente.
 
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Publishing Date
2021-08-11
 
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