wei xing zhou (11 Ergebnisse)

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Taschenbuch. Zustand: Neu. Neuware -All papers in this volume are original (fully refereed)research reports by participants of the special program onHarmonic Analysis held in the Nankai Institute ofMathematics. The main themes include: Wavelets, SingularIntegral Operators, Extemal Functions, H Spaces, HarmonicAnalysis on Local Domains and Lie Groups, and so on. Seealso :G. David 'Wavelets and Singular Integrals on Curvesand Surfaces', LNM 1465,1991.FROM THE CONTENTS: D.C. Chang: Nankai Lecture in -NeumannProblem.- T.P. Chen, D.Z. Zhang: Oscillary Integral withPolynomial Phase.- D.G. Deng, Y.S. Han: On a GeneralizedParaproduct Defined by Non-Convolution.- Y.S. Han: HBoundedness of Calderon-Zygmund Operators for ProductDomains.- Z.X. Liu, S.Z. Lu: Applications of H|rmanderMultiplier Theorem to Approximation in Real Hardy Spaces.-R.L. Long, F.S. Nie: Weighted Sobolev Inequality andEigenvalue Estimates of Schr|dinger Operator.- A. McIntosh,Q. Tao: Convolution Singular Integral Operators on LipschitzCurves.- Z.Y. Wen, L.M.Wu, Y.P. Zhang: Set of Zeros ofHarmonic Functions of Two Variables.- C.K. Yuan: On theStructures of Locally Compact Groups Admitting InnerInvariant Means.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 244 pp. Englisch.

The camaenid land snail genus Camaena is widely distributed throughout Southeast Asia. Thirteen species are found in China alone. Among these, C. cicatricosa (Müller, 1774) is the most widely distributed species, including four subspecies, C. c. ducalis (Ancey, 1885), C. c. inflata (Möllendorff, 1885), C. c. obtecta (Fischer, 1898) and C. c. connectens (Dautzenberg & Fischer, 1906). The systematics of these taxa is revised herein based on comparative shell morphology and anatomy as well as analyses of DNA sequences of two mitochondrial genes (COI, 16S rRNA) and one nuclear marker, ITS2. We found that all subspecies form well-supported clades in a molecular phylogeny and are well-differentiated from each other by genetic distances that are consistent with amounts of interspecific differentiation. In addition, they clearly differ from each other in reproductive features. Based on these observations, we elevate all four subspecies to the rank of full species. Moreover, based on morphological and mitochdondrial differentiation, we describe a new species, Camaena poyuensis sp. n. from Guangxi, China. The new species conspicuously differs from its sibling species C. cicatricosa in having a larger and more depressed shell, a completely covered umbilicus, more or less purplish peristome, an obtuse angle at the junction of the basal and columellar lip, longer pedunculus of the bursa copulatrix, thicker epiphallus and penis, and short conic verge. Previous named species are also redescribed on their shell and anatomical characters, because the original descriptions are uninformative. New taxon: Camaena poyuensis n. sp. 24 pp., 5 figs, gr. 8.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - All papers in this volume are original (fully refereed) research reports by participants of the special program on Harmonic Analysis held in the Nankai Institute of Mathematics. The main themes include: Wavelets, Singular Integral Operators, Extemal Functions, H Spaces, Harmonic Analysis on Local Domains and Lie Groups, and so on. See also :G. David 'Wavelets and Singular Integrals on Curves and Surfaces', LNM 1465,1991. FROM THE CONTENTS: D.C. Chang: Nankai Lecture in -Neumann Problem.- T.P. Chen, D.Z. Zhang: Oscillary Integral with Polynomial Phase.- D.G. Deng, Y.S. Han: On a Generalized Paraproduct Defined by Non-Convolution.- Y.S. Han: H Boundedness of Calderon-Zygmund Operators for Product Domains.- Z.X. Liu, S.Z. Lu: Applications of H rmander Multiplier Theorem to Approximation in Real Hardy Spaces.- R.L. Long, F.S. Nie: Weighted Sobolev Inequality and Eigenvalue Estimates of Schr dinger Operator.- A. McIntosh, Q. Tao: Convolution Singular Integral Operators on Lipschitz Curves.- Z.Y. Wen, L.M.Wu, Y.P. Zhang: Set of Zeros of Harmonic Functions of Two Variables.- C.K. Yuan: On the Structures of Locally Compact Groups Admitting Inner Invariant Means.

Taschenbuch. Zustand: Neu. Harmonic Analysis | Proceedings of the special program at the Nankai Institute of Mathematics, Tianjin, PR China, March-July, 1988 | Min-Teh Cheng (u. a.) | Taschenbuch | x | Englisch | 1991 | Springer Berlin | EAN 9783540549017 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

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