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Search Results: 1 - 10 of 92852 matches for " Jun Yu "
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A Study on Periods and Themes of Le Clézio’s Literary Creation  [PDF]
Jun Yu
Open Journal of Modern Linguistics (OJML) , 2019, DOI: 10.4236/ojml.2019.91003
Abstract: J.M.G. Le Clézio is obviously one of the most famous contemporary French writers, and his works have been translated into many languages and spread around the world. After he won the 2008 Nobel Prize in Literature, he received worldwide recognition. This paper focuses on the research of Le Clézio’s literary creation, analyzes the evolution of his writing style and characteristics of two periods of his literary creation, then extracts five main themes in his works during his two periods of creation, and makes an interpretation of his spirit of criticism, humane care and desire of escaping from the city and blending into the nature and exotic civilization.
Apply GPCA to Motion Segmentation  [PDF]
Hongchuan Yu, Jian Jun Zhang
Journal of Intelligent Learning Systems and Applications (JILSA) , 2011, DOI: 10.4236/jilsa.2011.31006
Abstract: In this paper, we present a motion segmentation approach based on the subspace segmentation technique, the genera-lized PCA. By incorporating the cues from the neighborhood of intensity edges of images, motion segmentation is solved under an algebra framework. Our main contribution is to propose a post-processing procedure, which can detect the boundaries of motion layers and further determine the layer ordering. Test results on real imagery have confirmed the validity of our method.
trans-Bis(ethylenediamine)bis{2-[N-(2-hydroxyethyl)oxamoylamino]benzoato}nickel(II)
Jun Yu
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810032848
Abstract: The title mononuclear NiII complex, [Ni(C11H11N2O5)2(C2H8N2)2], is built up by inversion symmetry associated with the central Ni atom. The ethylenediamine ligands are non-planar. The r.m.s. deviation from the mean plane of the five-membered Ni–ethylamine chelate ring plane is 0.1945 . In the crystal structure, complex molecules are linked to each other via N—H...O and O—-H...O hydrogen bonding through translation symmetry along the b and c axes, resulting in an extended supramolecular network.
A note on closed subgroups of compact Lie groups
Jun Yu
Mathematics , 2009,
Abstract: We reduce the classification of finite subgroups in compact Lie groups to that of quasi-simple ones, prove the number of conjugacy classes is finite and each cojugacy class is Zariski closed in mapping space, and classify "strongly controlling fusions" symmetric pairs.
Elementary abelian 2 subgroups of compact Lie groups
Jun Yu
Mathematics , 2011,
Abstract: We classify elementary abelian 2 subgroups of compact simple Lie groups of adjoint type. This finishes the classification of elementary abelian $p$ subgroups of compact (or linear algebraic) simple groups of adjoint type.
Maximal abelian subgroups of compact simple Lie groups
Jun Yu
Mathematics , 2012,
Abstract: We classify abelian subgroups of the automorphism group of any compact simple Lie algebra whose centralizer has the same dimension as the dimension of the subgroup. This leads to a classification of the maximal abelian subgroups of compact simple groups of adjoint type and a classification of the fine group gradings of complex simple Lie algebras.
On the dimension datum problem and the linear dependence problem
Jun Yu
Mathematics , 2013,
Abstract: The dimension datum of a closed subgroup of a compact Lie group is the sequence of invariant dimensions of irreducible representations by restriction. In this article we classify closed connected subgroups with equal dimension data or linearly dependent dimension data. This classification should have applications to the isospectral geometry and automorphic form theory. We also study the equality/linear dependence of not necessarily connected subgroups of unitary group acting irreducibly on the natural representation.
A rigidity result for dimension data
Jun Yu
Mathematics , 2013,
Abstract: The dimension datum of a closed subgroup of a compact Lie group is a sequence by assigning the invariant dimension of each irreducible representation restricting to the subgroup. We prove that any sequence of dimension data contains a converging sequence with limit the dimension datum of a subgroup interrelated to subgroups giving this sequence. This rigidity has an immediate corollary that the space of dimension data of closed subgroups in a given compact Lie group is sequentially compact.
Maximal abelian subgroups of Spin groups and some exceptional simple Lie groups
Jun Yu
Mathematics , 2014,
Abstract: We classify closed abelian subgroups of the simple groups $G_2$, $F_4$, $Aut(so(8))$ having centralizer the same dimension as the dimension of the subgroup, as well as finite abelian subgroups of certain spin and half-spin groups having finite centralizer.
Maximal abelian subgroups of compact matrix groups
Jun Yu
Mathematics , 2014,
Abstract: We classify closed abelian subgroups of the automorphism group of any compact classical simple Lie algebra whose centralizer has the same dimension as the dimension of the subgroup, and describe Weyl groups of maximal abelian subgroups.
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