Results 231 to 240 of about 8,909 (266)
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Removability of singularities in potential theory
Potential Analysis, 1994Etant donné un ouvert \(G\) de \(\mathbb{R}^ N\), un opérateur différentiel linéaire \(P(D)\) à coefficients \(\in{\mathcal C}^ \infty(G)\) et une partie fermée \(F\) de \(G\), on établit des conditions, les unes suffisantes, les autres nécessaires, pour que toute \(u\in{\mathcal L}^ 1_{\text{loc}}(G)\) solution (au sens des distributions) de \(P(D)u ...
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On Field Theory Methods in Singular Perturbation Theory
Letters in Mathematical Physics, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kurasov, P., Pavlov, Yu. V.
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1981
Professor Arnold is a prolific and versatile mathematician who has done striking work in differential equations and geometrical aspects of analysis. In this volume are collected seven of his survey articles from Russian Mathematical Surveys on singularity theory, the area to which he has made most contribution.
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Professor Arnold is a prolific and versatile mathematician who has done striking work in differential equations and geometrical aspects of analysis. In this volume are collected seven of his survey articles from Russian Mathematical Surveys on singularity theory, the area to which he has made most contribution.
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SINGULARITY-THEORY AND N=2 SUPERSYMMETRY
International Journal of Modern Physics A, 1991N=2 supersymmetry in two dimensions can be seen as a quantum realization of the geometry of singularity theory. We show this using non-perturbative methods. N=2 susy is related to the Picard-Lefschetz theory much in the same way as N=1 susy is related to Morse theory. All the concepts of singularity theory fit in the physics of the N=2 Landau-Ginsburg
Cecotti, Sergio +2 more
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1999
Singularity theory is a broad subject with vague boundaries. It draws on many other areas of mathematics, and in turn has contributed to many areas both within and outside mathematics, in particular differential and algebraic geometry, knot theory, differential equations, bifurcation theory, Hamiltonian mechanics, optics, robotics and computer vision ...
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Singularity theory is a broad subject with vague boundaries. It draws on many other areas of mathematics, and in turn has contributed to many areas both within and outside mathematics, in particular differential and algebraic geometry, knot theory, differential equations, bifurcation theory, Hamiltonian mechanics, optics, robotics and computer vision ...
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A Criterion for Singularities in Perturbation Theory
Journal of Mathematical Physics, 1962A criterion is proposed to distinguish between the singular and nonsingular portions of the Landau surface on the physical sheet. The set of diagrams under consideration are those containing a single loop. A proof of the Mandelstam representation for the four-point function is given based on this criterion.
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