Results 21 to 30 of about 459,640 (288)

Regularized Submodular Maximization at Scale

open access: yesCoRR, 2020
In this paper, we propose scalable methods for maximizing a regularized submodular function $f = g - \ell$ expressed as the difference between a monotone submodular function $g$ and a modular function $\ell$. Indeed, submodularity is inherently related to the notions of diversity, coverage, and representativeness.
Ehsan Kazemi 0001   +3 more
openaire   +4 more sources

Exponential self-similar mixing and loss of regularity for continuity equations [PDF]

open access: yes, 2014
We consider the mixing behaviour of the solutions of the continuity equation associated with a divergence-free velocity eld. In this announcement we sketch two explicit examples of exponential decay of the mixing scale of the solution, in case of Sobolev
Crippa, Gianluca   +5 more
core   +1 more source

Maximal Solutions of Sparse Analysis Regularization [PDF]

open access: yesJournal of Optimization Theory and Applications, 2018
This paper deals with the non-uniqueness of the solutions of an analysis-Lasso regularization. Most of previous works in this area is concerned with the case where the solution set is a singleton, or to derive guarantees to enforce uniqueness. Our main contribution consists in providing a geometrical interpretation of a solution with a maximal D ...
Barbara, Abdessamad   +2 more
openaire   +4 more sources

Compressions of resolvents and maximal radius of regularity [PDF]

open access: yesTransactions of the American Mathematical Society, 1999
Suppose that λ −
Badea, Catalin, Mbekhta, Mostafa
openaire   +3 more sources

Endpoint regularity of maximal functions in higher dimensions

open access: yes, 2022
It is well known that the Hardy-Littlewood maximal operator is bounded on Lebesgue spaces if the exponent is strictly larger than one, and that this bound fails when the Lebesgue exponent is equal to one.
Weigt, Julian
core   +1 more source

Sobolev Regularity of Multilinear Fractional Maximal Operators on Infinite Connected Graphs

open access: yesMathematics, 2021
Let G be an infinite connected graph. We introduce two kinds of multilinear fractional maximal operators on G. By assuming that the graph G satisfies certain geometric conditions, we establish the bounds for the above operators on the endpoint Sobolev ...
Suying Liu, Feng Liu
doaj   +1 more source

A refinement of Baillon’s theorem on maximal regularity [PDF]

open access: yesStudia Mathematica, 2022
By Baillon's result, it is known that maximal regularity with respect to the space of continuous functions is rare; it implies that either the involved semigroup generator is a bounded operator or the considered space contains $c_{0}$. We show that the latter alternative can be excluded under a refined condition resembling maximal regularity with ...
Jacob, Birgit   +2 more
openaire   +5 more sources

Maximal regular boundary value problems in Banach-valued function spaces and applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The nonlocal boundary value problems for differential operator equations of second order with dependent coefficients are studied. The principal parts of the differential operators generated by these problems are non-selfadjoint.
Veli B. Shakhmurov
doaj   +1 more source

ОЦЕНКА МАКСИМАЛЬНОЙ РЕГУЛЯРНОСТИ ДЛЯ ДИФФЕРЕНЦИАЛЬНОГО УРАВНЕНИЯ С КОЛЕБЛЮЩИМИСЯ КОЭФФИЦИЕНТАМИ

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2021
В работе рассматривается дифференциальное уравнение второго порядка с неограниченными коэффициентами. Получены достаточные условия суммируемости с весом решения и его производных вплоть до второго порядка.
A. N. Yesbayev, K. N. Ospanov
doaj   +1 more source

Regularity of Commutators of the One-Sided Hardy-Littlewood Maximal Functions

open access: yesJournal of Function Spaces, 2020
In this paper, the regularity properties of two classes of commutators of the one-sided Hardy-Littlewood maximal functions and their fractional variants are investigated.
Daiqing Zhang
doaj   +1 more source

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