Topic
Ricci decomposition
About: Ricci decomposition is a research topic. Over the lifetime, 1972 publications have been published within this topic receiving 45295 citations.
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TL;DR: In this article, the irreducible representations of the scale-Euclidean group in three dimensions are introduced, and the general tensor is expanded in terms of these representations.
Abstract: The irreducible representations of the scale-Euclidean group in three dimensions are introduced, and the general tensor is expanded in terms of these representations. The cases of zero-rank tensor (scalar), rank-1 tensor (vector), and rank-2 tensor are studied in detail. The expansion is shown to be a generalization of the Helmholtz expansion of a vector into rotational and irrotational parts.
10 citations
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10 citations
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TL;DR: In this article, a survey of Ricci solitons geometry as an application of the theory of infinitesimal harmonic transformations is presented, and it is shown that the vector field is an infiniteimal harmonic transformation.
Abstract: The concept of the Ricci soliton was introduced by Hamilton. Ricci soliton is defined by vector field and it's a natural generalization of Einstein metric. We have shown earlier that the vector field of Ricci soliton is an infinitesimal harmonic transformation. In our paper, we survey Ricci solitons geometry as an application of the theory of infinitesimal harmonic transformations.
10 citations
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TL;DR: In this article, the pseudolocality type theorem for compact Ricci flows under local integral bounds on curvature was proved for the case of the Ricci flow introduced by Deane Yang and Perelman.
Abstract: We prove a pseudolocality type theorem for compact Ricci flows under local integral bounds on curvature. The main tool we use here is the local Ricci flow introduced by Deane Yang and the pseudolocality theorem due to Perelman. We also prove a theorem on the extension of the local Ricci flow.
10 citations
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TL;DR: The structure of the Ricci tensor on a locally homogeneous Lorentzian gradient Ricci soliton is described in this article, where it is shown that it is rigid in dimensions three and four.
Abstract: We describe the structure of the Ricci tensor on a locally homogeneous Lorentzian gradient Ricci soliton. In the non-steady case, we show the soliton is rigid in dimensions three and four. In the steady case, we give a complete classification in dimension three.
10 citations