Results 51 to 60 of about 167 (104)

The uniform and pointwise estimates for polynomials on the weighted Lebesgue spaces in the general regions of complex plane

open access: yes, 2019
The estimation of the modulus of algebraic polynomials on the boundary contour with weight function, having some singularities, with respect to the their quasinorm, on the weighted Lebesgue space was studied in this current ...
Ozkartepe, P., Abdullayev, F. G.
core   +1 more source

Estimates of Discrete Probability Distributions for Applications

open access: yes, 2016
Master's thesis is focused on solution of the statistical problem to find a probability distribution of a discrete random variable on the basis of the observed data. These estimates are obtained by minimizing pseudo-quasinorm which is introduced here.The
Mašek, Jakub
core   +1 more source

Sharp Lorentz estimates for dyadic-like maximal operators and related Bellman functions [PDF]

open access: yes, 2014
We precisely evaluate Bellman type functions for the dyadic maximal opeator on Rn and of maximal operators on martingales related to local Lorentz type estimates.
Antonios D. Melas   +1 more
core  

Analysis and finite element approximation of a nonlinear stationary stokes problem arising in glaciology [PDF]

open access: yes, 2011
The aim of this paper is to study a nonlinear stationary Stokes problem with mixed boundary conditions that describes the ice velocity and pressure fields of grounded glaciers under Glen's flow law. Using convex analysis arguments, we prove the existence
Jouvet, G., Rappaz, J.
core   +1 more source

MEG/EEG source imaging with a non-convex penalty in the time-frequency domain

open access: yes, 2015
International audienceDue to the excellent temporal resolution, MEG/EEG source imaging is an important measurement modality to study dynamic processes in the brain. As the bioelectromagnetic inverse problem is ill-posed, constraints have to be imposed on
Strohmeier, Daniel   +2 more
core   +3 more sources

Sharp Lorentz Estimates for Dyadic-like Maximal Operators and Related Bellman Functions

open access: yes, 2017
We precisely evaluate Bellman-type functions for the dyadic maximal operator on Rn and of maximal operators on martingales related to local Lorentz-type estimates.
Nikolidakis, E.N., Melas, A.D.
core   +1 more source

Numerical approximation of regularized non-convex elliptic optimal control problems by the finite element method [PDF]

open access: yes, 2022
We investigate the numerical approximation of an elliptic optimal control problem which involves a nonconvex local regularization of the $L^q$-quasinorm penalization (with $q\in(0,1)$) in the cost function.
Nenjer, Alexander, Merino, Pedro
core   +1 more source

Minimizing the distortions in electrophysiological source imaging of cortical oscillatory activity via Spectral Structured Sparse Bayesian Learning. [PDF]

open access: yesFront Neurosci, 2023
Paz-Linares D   +11 more
europepmc   +1 more source

Some surjectivity results for a class of multivalued maps and applications

open access: yes, 1987
Let X be a Banach space over k (R or $ℂ$) and let $F:X→ X$ be a multivalued upper semicontinuous (u.s.c.) map with acyclic values. In [MV] Martelli and Vignoli extended to multivalued maps F the definition of a quasinorm of F (notation $|F|$) given by ...
Conti, G., Carbone, A.
core   +1 more source

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