Results 31 to 40 of about 2,835 (222)

Landau-Kolmogorov Inequalities for Semigroups and Groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
An elementary functional analytic argument is given showing how inequalities of the form ‖
Certain, Melinda W., Kurtz, Thomas G.
openaire   +2 more sources

Improved Hardy Inequalities with a Class of Weights

open access: yesMathematics, 2023
In the framework of Hardy type inequalities and their applications to evolution problems, the paper deals with local and nonlocal weighted improved Hardy inequalities related to the study of Kolmogorov operators perturbed by singular potentials.
Anna Canale
doaj   +1 more source

Schauder estimates, Harnack inequality and Gaussian lower bound for Kolmogorov type operators in non-divergence form [PDF]

open access: yes, 2006
We prove some Schauder type estimates and an invariant Harnack inequality for a class of degenerate evolution operators of Kolmogorov type. We also prove a Gaussian lower bound for the fundamental solution of the operator and a uniqueness result for ...
Polidoro, Sergio   +2 more
core   +1 more source

Strong Laws of Large Numbers for General Random Variables Under Conditional Sub-Additive Expectation and Capacity

open access: yesMathematics
We study strong laws of large numbers in a non-linear framework based on conditional sub-additive expectations and conditional sub-additive capacities. Using an axiomatic approach to conditional sub-additive expectation, we establish a conditional Hájek ...
Nyanga Honda Masasila, István Fazekas
doaj   +1 more source

Probing the quantum–classical boundary with compression software

open access: yesNew Journal of Physics, 2016
We adapt an algorithmic approach to the problem of local realism in a bipartite scenario. We assume that local outcomes are simulated by spatially separated universal Turing machines.
Hou Shun Poh   +5 more
doaj   +1 more source

The case of equality in Landau's problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
Kolmogorov (1949) determined the best possible constant Kn,m for the inequality Mm(f)≤Kn,mM0(n−m)/n(f)Mnm/n(f ...
G. W. Hagerty, P. Nag
doaj   +1 more source

On the Landau-Kolmogorov inequality between $\| f' \|_{\infty}$, $\| f \|_{\infty}$ and $\| f''' \|_1$

open access: yesResearches in Mathematics, 2019
We solve the Landau-Kolmogorov problem on finding sharp additive inequalities that estimate $\| f' \|_{\infty}$ in terms of $\| f \|_{\infty}$ and $\| f''' \|_1$.
D. Skorokhodov
doaj   +1 more source

Environmental Disclosure Under Mandatory Regulation in EU Listed Companies: An Institutional Analysis

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines corporate environmental reporting practices among listed companies in the European Union during the period 2018–2022, within the context of the Non‐Financial Reporting Directive (NFRD). To this end, an Environmental Disclosure Index (EDI) is constructed based on qualitative reporting items, and panel‐data models are ...
Rosalva Pinto‐Braga   +2 more
wiley   +1 more source

A Landau-Kolmogorov Inequality for Lorentz Spaces

open access: yesTokyo Journal of Mathematics, 2004
The Landau-Kolmogorov inequality for differentiable functions on the half line asserts that if \(f,f^{(n)}\in L_{\infty}(\mathbb{R}_{+})\) then \(f^{(k)}\in L_{\infty}(\mathbb{R}_{+})\) and \[ \| f^{(k)}\| _{\infty}\leq C_{k,n}^{+}\| f\| _{\infty}^{1-k/n}\| f^{(n)}\| _{\infty}^{k/n} \] for \(k\in\{1,\dots,n-1\}\).
BANG, Ha Huy, THU, Mai Thi
openaire   +2 more sources

A goodness‐of‐fit test for regression models with discrete outcomes

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Regression models are often used to analyze discrete outcomes, but classical goodness‐of‐fit tests such as those based on the deviance or Pearson's statistic can be misleading or have little power in this context. To address this issue, we propose a new test, inspired by the work of Czado et al.
Lu Yang   +2 more
wiley   +1 more source

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