Isometric Rigidity
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Imersões isométricas em 3-variedades Lorentzianas homogêneas / Isometric immersions into 3-dimensional Lorentzians homogeneous manifolds
Neste trabalho, provamos um teorema de imersões isométricas em variedades Lorentzianas homogêneas tridimensionais, usando a teoria de G- estruturas. Tais variedades são aquelas consideradas na classificação das 3- variedades Lorentzianas homogêneas de Dumitrescu e Zeghib. Provamos também um teorema de rigidez isométrica para hipersuperfícies em var
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/05/2008
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2. Some isometric embedding and rigidity results for Riemannian manifolds
In this note, we announce some new results concerning rigidity and isometric embeddings of Riemannian manifolds. A special case of the main result states that a general Mn [unk] Rn+r, r≤(n - 1)(n - 2)/2, is uniquely determined up to finitely many constants by its induced ds2.
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3. Levodopa in Parkinsonism: reduction in the electromyographic silent period and its relationship with tremor
The electromyographic silent period after electrical stimulation of the median nerve was recorded by surface electrodes over the abductor pollicis brevis muscle in 32 patients with Parkinsonism before and after treatment with levodopa. A supra-maximal stimulus was delivered during maximal isometric contraction of the muscle. The silent period was prolonged i