Results 31 to 40 of about 1,704,126 (187)

Directional total generalized variation regularization [PDF]

open access: yesBIT Numerical Mathematics, 2019
In inverse problems, prior information and a priori-based regularization techniques play important roles. In this paper, we focus on image restoration problems, especially on restoring images whose texture mainly follow one direction. In order to incorporate the directional information, we propose a new directional total generalized variation (DTGV ...
Rasmus Dalgas Kongskov   +2 more
openaire   +4 more sources

Regularly varying probability densities [PDF]

open access: yes, 2006
The convolution of regularly varying probability densities is proved asymptotic to their sum, and hence is also regularly varying.
Bingham, N. H.   +2 more
core   +2 more sources

Models with hidden regular variation: Generation and detection

open access: yesStochastic Systems, 2015
We review the notions of multivariate regular variation (MRV) and hidden regular variation (HRV) for distributions of random vectors and then discuss methods for generating models exhibiting both properties concentrating on the non-negative orthant in ...
Bikramjit Das, Sidney Ira Resnick
doaj   +1 more source

Singular solutions for divergence-form elliptic equations involving regular variation theory: Existence and classification [PDF]

open access: yes, 2016
We generalise and sharpen several recent results in the literature regarding the existence and complete classification of the isolated singularities for a broad class of nonlinear elliptic equations of the form \begin{equation} -{\rm div}\,(\mathcal A(|x|
Chang, Ting-Ying, Cîrstea, Florica
core   +2 more sources

Skorokhod M1 convergence of maxima of multivariate linear processes with heavy-tailed innovations and random coefficients

open access: yesModern Stochastics: Theory and Applications
In this paper, functional convergence is derived for the partial maxima stochastic processes of multivariate linear processes with weakly dependent heavy-tailed innovations and random coefficients. The convergence takes place in the space of ${\mathbb{R}^
Danijel Krizmanić
doaj   +1 more source

A possible effect of atmospheric circulation in the daily variation of the earth's magnetic field. II. [PDF]

open access: yes, 1965
Seasonal features that are not related in a simple way to solar declination occur in the daily variation of the horizontal intensity of the earth's magnetic field at Tucson, as at Honolulu studied previously.
Wulf, Oliver Reynolds
core   +1 more source

The weak Pareto law and regular variation in the tails

open access: yesStatistica, 2007
We show that the weak Pareto law, as used to characterize the tail behaviour of income distributions, implies regularly varying tail probabilities, but that the reverse implication does not hold. We also establish implications among other versions of the
Walter Kramer, T. Ziebach
doaj   +1 more source

Regularly Varying Measures on Metric Spaces: Hidden Regular Variation and Hidden Jumps

open access: yes, 2013
We develop a framework for regularly varying measures on complete separable metric spaces $\mathbb{S}$ with a closed cone $\mathbb{C}$ removed, extending material in Hult & Lindskog (2006), Das, Mitra & Resnick (2013).
Lindskog, Filip   +2 more
core   +2 more sources

Existence and boundary behavior of positive solutions for a Sturm-Liouville problem [PDF]

open access: yesOpuscula Mathematica, 2016
In this paper, we discuss existence, uniqueness and boundary behavior of a positive solution to the following nonlinear Sturm-Liouville problem \[\begin{aligned}&\frac{1}{A}(Au^{\prime })^{\prime }+a(t)u^{\sigma}=0\;\;\text{in}\;(0,1),\\ &\lim\limits_{t ...
Syrine Masmoudi, Samia Zermani
doaj   +1 more source

Regularization of Brézis pseudomonotone variational inequalities

open access: yesSet-Valued and Variational Analysis, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bianchi Monica, Pini Rita, Kassay Gabor
openaire   +1 more source

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