Results 31 to 40 of about 956,253 (229)
Rocky Mountain Journal of Mathematics, 2001 Let \((M,g)\) be a closed orientable orbifold, (i.e. a \(V\) manifold). The author establishes the basic spectral theory of these singular spaces, generalizing the Sobolev embedding theorem, the Rellich theorem, and the Poincaré inequalities from the smooth setting to this more general setting. The author derives the basic properties of the spectrum of
openaire +3 more sources
Spectral theory and nonlinear problems Théorie spectrale et problèmes non-linéaires [PDF]
Surveys in Mathematics and its Applications, 2010 We present a Lie algebra theoretical schema leading to integrable systems, based on the Kostant-Kirillov coadjoint action. Many problems on Kostant-Kirillov coadjoint orbits in subalgebras of infinite dimensional Lie algebras (Kac-Moody Lie algebras)
Ahmed Lesfari
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Fluctuations from dissipation in a hot non-Abelian plasma [PDF]
, 1999 We consider a transport equation of the Boltzmann-Langevin type for non-Abelian plasmas close to equilibrium to derive the spectral functions of the underlying microscopic fluctuations from the entropy. The correlator of the stochastic source is obtained
A. G. Sitenko +16 more
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The spectral shift function and spectral flow
, 2007 This paper extends Krein's spectral shift function theory to the setting of semifinite spectral triples. We define the spectral shift function under these hypotheses via Birman-Solomyak spectral averaging formula and show that it computes spectral flow ...
A. Connes +28 more
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Spectral and Oscillation Theory for an Unconventional Fractional Sturm–Liouville Problem
Fractal and FractionalHere, we investigate the spectral and oscillation theory for a class of fractional differential equations subject to specific boundary conditions.
Mohammad Dehghan, Angelo B. Mingarelli
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A Very Brief Introduction to Nonnegative Tensors from the Geometric Viewpoint
Mathematics, 2018 This note is a short survey of nonnegative tensors, primarily from the geometric point of view. In addition to basic definitions, we discuss properties of and questions about nonnegative tensors, which may be of interest to geometers.
Yang Qi
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Spectral density constraints in quantum field theory [PDF]
, 2015 Determining the structure of spectral densities is important for understanding the behaviour of any quantum field theory (QFT). However, the exact calculation of these quantities often requires a full non-perturbative description of the theory, which for
Lowdon, Peter
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Manifestations of Projection-Induced Memory: General Theory and the Tilted Single File
Frontiers in Physics, 2019 Over the years the field of non-Markovian stochastic processes and anomalous diffusion evolved from a specialized topic to mainstream theory, which transgressed the realms of physics to chemistry, biology and ecology. Numerous phenomenological approaches
Alessio Lapolla, Aljaž Godec
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Symplectic spectral geometry of semiclassical operators [PDF]
, 2013 In the past decade there has been a flurry of activity at the intersection of spectral theory and symplectic geometry. In this paper we review recent results on semiclassical spectral theory for commuting Berezin-Toeplitz and h-pseudodifferential ...
Pelayo, Álvaro
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Dependence of effective spectrum width of synchrotron radiation on particle energy
, 2017 For an exact quantitative description of spectral properties in the theory of synchrotron radiation, the concept of effective spectral width is introduced.
Bagrov, V. G. +4 more
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