Results 141 to 150 of about 3,355,987 (326)

Function spaces in lipschitz domains and on lipschitz manifolds. Characteristic functions as pointwise multipliers

open access: yesRevista Matemática Complutense, 2002
This interesting paper combines features of a survey and of a research paper. It deals with the spaces \(B^s_{pq}(\Omega)\) and \(F^s_{pq}(\Omega)\) where \(\Omega\) is a domain in \(\mathbb{R}^n\). The case of a bounded \(C^\infty\)-domain was systematically studied in the last few decades, being well presented in various books. The case when \(\Omega\
openaire   +2 more sources

Lipschitz continuity of the Green function in Denjoy domains

open access: yesArkiv för Matematik, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carroll, Tom, Gardiner, Stephen J.
openaire   +3 more sources

Sequential Outlier Detection in Nonstationary Time Series

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs   +2 more
wiley   +1 more source

Infinitely many solutions for a class of hemivariational inequalities involving p(x)-Laplacian

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
In this paper hemivariational inequality with nonhomogeneous Neumann boundary condition is investigated. The existence of infinitely many small solutions involving a class of p(x) - Laplacian equation in a smooth bounded domain is established.
Fattahi Fariba, Alimohammady Mohsen
doaj   +1 more source

Marchenko–Pastur Laws for Daniell Smoothed Periodograms

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT Given a sample X0,…,Xn−1$$ {X}_0,\dots, {X}_{n-1} $$ from a d$$ d $$‐dimensional stationary time series (Xt)t∈ℤ$$ {\left({X}_t\right)}_{t\in \mathbb{Z}} $$, the most commonly used estimator for the spectral density matrix F(θ)$$ F\left(\theta \right) $$ at a given frequency θ∈[0,2π)$$ \theta \in \left[0,2\pi \right) $$ is the Daniell smoothed ...
Ben Deitmar
wiley   +1 more source

Measure‐valued processes for energy markets

open access: yesMathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.
Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero   +3 more
wiley   +1 more source

Partial regularity for flows of H-surfaces, II

open access: yesElectronic Journal of Differential Equations, 1999
We study the regularity of weak solutions to the heat equation for H-surfaces. Under the assumption that the function $H:{Bbb R}^3 o {Bbb R}$ is bounded and Lipschitz, we show that the solution is $C^{2,alpha}$ on its domain, except for a set of measure ...
Changyou Wang
doaj  

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