Inmersións e submersións
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[GL] No estudo do comportamento das aplicacións entre variedades diferenciables xoga un
papel importante o coñecemento das propiedades das aplicacións tanxentes. Isto leva a
considerar as inmersións e as submersións. As inmersións, e o caso particular dos embebementos
regulares, son esenciais no estudo das subvariedades e as submersións son necesarias
para estudar as variedades cocientes. Analizamos diferentes formas de considerar as subvariedades
e tamén estudamos variedades cocientes, en particular as que se poden obter
por accións propiamente discontinuas de grupos. Tamén incluímos varios exemplos.
[EN] In the study of the behaviour of smooth maps between differentiable manifolds, the knowledge of the properties of the tangent application at each point plays a crucial role. This leads us to consider immersions and submersions. Immersions, together with the particular case of embeddings, are essential in the study of submanifolds while submersions are necessary to study quotient manifolds. We analyze different ways of considering submanifolds and also regard quotient manifolds, particularly those obtained by properly discontinuous actions of groups. Concrete examples are also presented.
[EN] In the study of the behaviour of smooth maps between differentiable manifolds, the knowledge of the properties of the tangent application at each point plays a crucial role. This leads us to consider immersions and submersions. Immersions, together with the particular case of embeddings, are essential in the study of submanifolds while submersions are necessary to study quotient manifolds. We analyze different ways of considering submanifolds and also regard quotient manifolds, particularly those obtained by properly discontinuous actions of groups. Concrete examples are also presented.
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Traballo Fin de Grao en Matemáticas. Curso 2020-2021
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