Results 151 to 160 of about 18,204 (186)
"In Mathematical Language": On Mathematical Foundations of Quantum Foundations. [PDF]
Plotnitsky A.
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COLUMBUS─An Efficient and General Program Package for Ground and Excited State Computations Including Spin-Orbit Couplings and Dynamics. [PDF]
Plasser F +35 more
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On self-dual almost Hermitian \(4\)-manifolds
Kim, Un Kyu, Kim, In-Bae, Jun, Jae-Bok
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Almost hermitian manifolds and Osserman condition
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 2001The aim of this work is to extend a previous result of \textit{Q.-S. Chi} [J. Differ. Geom. 28, 187-202 (1988; Zbl 0654.53053)] which shows that Osserman Kähler manifolds are complex space forms provided that the holomorphic sectional curvature is nonpositive or nonnegative.
Blažić, N., Prvanović, M.
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Homogeneous almost quaternion-hermitian manifolds
2012An almost quaternion-Hermitian structure on a Riemannian manifold (M4n; g) is a reduction of the structure group of M to Sp(n)Sp(1) SO(4n). In this paper we show that a compact simply connected homogeneous almost quaternion-Hermitian manifold of non-vanishing Euler characteristic is either a Wolf space, or S2 S2, or the complex quadric SO(7)=U(3).
Moroianu, Andrei +2 more
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The Dirichlet Problem on Almost Hermitian Manifolds
The Journal of Geometric Analysis, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chang Li, Tao Zheng
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ALMOST EINSTEIN-HERMITIAN MANIFOLDS
JP Journal of Geometry and TopologyIn this paper, we show that every almost Einstein-Hermitian 4-manifold (i.e., almost Hermitian 4-manifold with -invariant Ricci tensor and harmonic Weyl tensor) is either Einstein or Hermitian. Consequently, we obtain that any almost Einstein-Hermitian 4-manifold which is not Einstein must be Hermitian and that every almost Einstein-Hermitian 4 ...
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Isometric Immersions of almost Hermitian Manifolds
Canadian Journal of Mathematics, 1969The Lefschetz theorem on hyperplane sections, as proved by Andreotti and Frankel (1), depends upon the following result.THEOREM. If M is a non-singular affine algebraic variety of real dimension 2k of complex n-space, thenThis theorem, which is interesting in itself, has been strengthened by Milnor (7), who showed that M has the homotopy type of a k ...
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J-harmonic functions on almost Hermitian manifolds
Differential Geometry and its Applications, 2020The purpose of this paper is to examine the \(J\)-Laplacian operator \(\Delta_J=\mathrm{div} J \nabla\) acting on smooth functions on an almost Hermitian manifold \((M,J,g)\). Let \(\omega(X,Y)=g(JX,Y)\) be a fundamental 2-form for an almost Hermitian structure. An almost Hermitian manifold is called almost-Kähler if \(d\omega=0\) and it is called semi-
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