Results 21 to 30 of about 1,461,044 (179)
Navigation problem and conformal vector fields [PDF]
AUT Journal of Mathematics and Computing, 2021 The navigation technique is very effective to obtain or classify a Finsler metric from a given a Finsler metric (especially a Riemannian metric) under an action of a vector field on a differential manifold.
Qiaoling Xia
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On an Anti-Torqued Vector Field on Riemannian Manifolds
Mathematics, 2021 A torqued vector field ξ is a torse-forming vector field on a Riemannian manifold that is orthogonal to the dual vector field of the 1-form in the definition of torse-forming vector field. In this paper, we introduce an anti-torqued vector field which is
Sharief Deshmukh +2 more
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Drived diffusion of vector fields [PDF]
, 1998 A model for the diffusion of vector fields driven by external forces is proposed. Using the renormalization group and the $\epsilon$-expansion, the dynamical critical properties of the model with gaussian noise for dimensions below the critical dimension
Biswas P +11 more
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Tailoring optical complex fields with nano-metallic surfaces
Nanophotonics, 2015 Recently there is an increasing interest in complex optical fields with spatially inhomogeneous state of polarizations and optical singularities.
Rui Guanghao, Zhan Qiwen
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The Poincaré Index and Its Applications
Universe, 2022 We discuss an approach to the problem of calculating the local topological index of vector fields given on complex spaces or varieties with singularities developed by the author over the past few years. Our method is based on the study of the homology of
Alexander G. Aleksandrov
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Helmholtz decomposition theorem and Blumenthal's extension by regularization [PDF]
, 2017 Helmholtz decomposition theorem for vector fields is usually presented with too strong restrictions on the fields and only for time independent fields.
Folk, R., Petrascheck, D.
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On the structure of characteristic surfaces related with partial differential equations of first and higher orders. Part 1 [PDF]
Opuscula Mathematica, 2005 The geometric structure of characteristic surfaces related with partial differential equations of first and higher orders is studied making use the vector field technique on hypersurfaces.
Natalia K. Prykarpatska +1 more
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de Sitter symmetries and inflationary scalar-vector models
Universitas Scientiarum, 2016 In this paper, we study the correspondence between a field theory in de Sitter space in D-dimensions and a dual conformal field theory in a euclidean space in (D − 1)-dimensions.
Juan P. Beltrán Almeida +1 more
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Semiclassical effects in black hole interiors [PDF]
, 1997 First-order semiclassical perturbations to the Schwarzschild black hole geometry are studied within the black hole interior. The source of the perturbations is taken to be the vacuum stress-energy of quantized scalar, spinor, and vector fields, evaluated
A. A. Starobinsky +37 more
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Journal of Differential Equations, 1993 In \S1 of this paper the author generalizes the theory of rotated vector fields of G. F. D. Duff to rotated vector fields \[ \dot x=f_ 1(x,y,\lambda), \qquad \dot y=f_ 2(x,y,\lambda) \tag{\(1_ \lambda\)} \] where \(\lambda\in R\), \(f_ i\) and \(G\) are analytic, and no cycle of \((1_ \lambda)\) is congruent to a branch of \(G(x,y)=0\); he proves that ...
openaire +2 more sources