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Dinâmica de um sistema presa-predador com predador infectado por uma doença
(Universidade Federal de Santa Maria, 2013-05-10)
The aim of this work is to study the temporal and spatiotemporal evolution of a threedimensional
system that describes a predator-prey dynamics, where the predator population
can develop an infectious disease.
Thus, the ...
Equações diferenciais lineares sem solução
(Universidade Federal de Santa Maria, 2014-02-27)
In this work we present the proof of a result due to Lars Hörmander which establishes a necessary condition for a linear operator with variable coefficients is globally resolvable.
Múltiplas escalas em interações presa-predador
(Universidade Federal de Santa Maria, 2010-03-05)
The main purpose of this dissertation was to analyze the occurrence of two time scales in predator-prey systems. Initially, we proposed two discrete models without
spatial structure. The first model considers fast vital ...
Ações parciais de grupos e ações de semigrupos inversos
(Universidade Federal de Santa Maria, 2008-10-05)
Não possível inserir o abstract.
Perseguição e fuga em modelos presa-predador
(Universidade Federal de Santa Maria, 2010-03-04)
The main purpose of this dissertation is to propose and analyze the effects of pursuit and evasion on predator-prey spatiotemporal dynamics. We use a Coupled Map Lattices formulation in which a system of difference equations ...
Um modelo de redes de mapas acoplados para um sistema praga-predador-inseticida
(Universidade Federal de Santa Maria, 2016-08-24)
This research is inserted in the Biomathematics Research Group of the Programa de
Pós-Graduação em Matemática of the Universidade Federal de Santa Maria-RS. It
consists in the study of a discrete model for a prey-preda ...
Dualidade de Tannaka para biálgebras
(Universidade Federal de Santa Maria, 2015-08-14)
Não foi possível inserir o abstract.
Mergulho de superfície mínima e curvatura total de seu bordo
(Universidade Federal de Santa Maria, 2021-10-07)
Given a minimal submanifold Σn ⊂ Rm with compact boundary Γn−¹, in this work we
analyze under which conditions on Γ we can conclude that Σ is embedded. We show that if a
simple closed curve Γ ⊂ Rm, piecewise regular and ...
Teoremas de Maschke
(Universidade Federal de Santa Maria, 2013-05-09)
In representation theory, having a representation of a group G is equivalent to having
a kG-module. Since |G-modules which are sums of irreducible kG-modules form a very
important class in the theory of modules, to know ...
Sobre uma classe de problemas elípticos envolvendo o operador p-Laplaciano, com peso e potencial indefinidos e diferentes condições de fronteira
(Universidade Federal de Santa Maria, 2019-03-12)
This work is dedicated to study two distinct classes of eigenvalue problems, involvinthe p-laplacian operator and indefinite weight and potential functions. We give somge
necessary and sufficient conditions such that there ...