Results 11 to 20 of about 394,346 (266)
Physical Review D, 2011 We propose a natural scenario for the cosmological inflation with the non-minimal coupling term invoking compact hyperbolic extra dimensions. Thanks to the unique mathematical properties of compact hyperbolic space, the large volume of extra dimensions, which provides a natural understanding of the proper size of couplings, does not necessarily ...
Kim, Yoonbai, Park, Seong Chan
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Annali di Matematica Pura ed Applicata, 2010 Given a complex space $X$, we cosidered the problem of finding a {\it hyperbolic model} of $X$. This is an object $\ip(X)$ with a morphism $i:X\to \ip(X)$ in such a way that $\ip(X)$ is ``hyperbolic'' in a suitable sense and $i$ is as close as possible to be an isomorphism.
Borghesi, Simone, Tomassini, Giuseppe
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A hyperbolic-by-hyperbolic hyperbolic group [PDF]
Proceedings of the American Mathematical Society, 1997 Given a short exact sequence of finitely generated groups \(1\to K\to G\to H\to 1\), the author has shown [in J. Pure Appl. Algebra 110, No. 3, 305-314 (1996; Zbl 0851.20037)] that if \(K\) and \(G\) are word hyperbolic and if \(K\) is nonelementary (that is, not virtually cyclic), then \(H\) is word hyperbolic. The interesting original example of this
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Pointwise hyperbolicity implies uniform hyperbolicity
Discrete & Continuous Dynamical Systems - A, 2014 Oberwolfach Preprints;2009 ...
Hasselblatt, Boris +2 more
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Hyperbolic geometrical optics: Hyperbolic glass
Journal of Mathematical Physics, 2006 We study the geometrical optics generated by a refractive index of the form n(x,y)=1∕y (y>0), where y is the coordinate of the vertical axis in an orthogonal reference frame in R2. We thus obtain what we call “hyperbolic geometrical optics” since the ray trajectories are geodesics in the Poincaré-Lobachevsky half-plane H2. Then we prove that the
De Micheli Enrico +2 more
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Off-axis representation of hyperbolic mirror shapes for X-ray beamlines
Journal of Synchrotron Radiation, 2023 Mirror-centered, closed-form expressions for hyperbolic surfaces used in X-ray beamlines have been derived. Hyperbolic mirrors create a virtual focus or source point and can be used to lengthen or shorten the effective focal distance of a compound ...
Kenneth A. Goldberg +1 more
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Moiré Hyperbolic Metasurfaces [PDF]
Nano Letters, 2020 17 pages, 4 ...
Guangwei Hu +4 more
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Frontiers in Neuroscience, 2011 Studies of delay discounting typically have involved choices between smaller, immediate outcomes and larger, delayed outcomes. In a study of delay discounting in humans, Green, Myerson, and Macaux (2005) added a period of time prior to both outcomes ...
Amanda L. Calvert +2 more
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Flows with ergodic pseudo orbit tracing property
Electronic Research Archive, 2022 In the manuscript, we deal with a type of pseudo orbit tracing property and hyperbolicity about a vector field (or a divergence free vector field). We prove that a vector field (or a divergence free vector field) of a smooth closed manifold $ M $ has the
Manseob Lee
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Forced hyperbolic mean curvature flow [PDF]
, 2012 In this paper, we investigate two hyperbolic flows obtained by adding forcing terms in direction of the position vector to the hyperbolic mean curvature flows in \cite{klw,hdl}.
Mao, Jing
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