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Pseudoespectros de matrices
(2015-10-23)
Es conocida la relación entre los pseudoespectros de una matriz cuadrada simple A y losvalores singulares de la función matricial de dos variables reales x,y(x+yi)In-A, (1)así como su relación con la distancia de A al ...
Visibility recovery on images acquired in attenuating media. Application to underwater, fog, and mammographic imaging
(2015-12-17)
When acquired in attenuating media, digital images of ten suffer from a particularly complex degradation that reduces their visual quality, hindering their suitability for further computational applications, or simply ...
An isoperimetric-type inequality for electrostatic shell interactions for Dirac operators
(Springer Nature, 2015-10-17)
Abstract: In this article we investigate spectral properties of the coupling H +Vλ, where
H = −iα ·∇ +mβ is the free Dirac operator in R3 , m > 0 and Vλ is an electrostatic shell
potential (which depends on a parameter ...