Results 41 to 50 of about 9,585 (266)

Integrals of weighted maximal logarithmic kernels on bounded Vilenkin groups [PDF]

open access: yesPeriodica Mathematica Hungarica, 2012
Let \(\{m_k\}_{k=0}^\infty\) be a sequence of natural numbers that are greater than \(1\), let \(M_0=1\), \(M_{k+1}=M_km_k\), \(k\geq 1\), and let \(\mathbb Z_{m_k}\) be the \(m_k\)-th cyclic group with discrete topology and measure \(\mu(x)=1/m_k\) for all \(x\in \mathbb Z_{m_k}\). Then \(G_m:=\prod^\infty_{k=0} \mathbb Z_{m_k}\) is a compact Vilenkin
Mező, István, Nagy, Károly
openaire   +2 more sources

Efficiency and Technology Gap in European Apple Production—A Metafrontier Model for Germany, Italy, and Poland

open access: yesAgribusiness, EarlyView.
ABSTRACT EU member states have exhibited varying rates of apple production growth. Technical efficiency (TE) estimation is suitable for identifying best‐practice farm performance. This study examined whether the development of the apple sector in Germany, Italy, and Poland was influenced by production efficiency, access to technology, as well as ...
Anika Muder, Jakub Staniszewski
wiley   +1 more source

Six-dimensional one-loop divergences in quantum gravity from the N $$ \mathcal{N} $$ = 4 spinning particle

open access: yesJournal of High Energy Physics, 2023
In this work, we investigate the computation of the counterterms necessary for the renormalization of the one-loop effective action of quantum gravity using both the worldline formalism and the heat kernel method.
Fiorenzo Bastianelli   +3 more
doaj   +1 more source

Logarithmic convexity of fixed points of stochastic kernel operators [PDF]

open access: yesPositivity, 2018
In this article we prove results on logaritmic convexity of fixed points of stochastic kernel operators. These results are expected to play a key role in the economic application to strategic market games.
openaire   +2 more sources

Short time behavior of logarithmic derivatives of the heat kernel [PDF]

open access: yesAsian Journal of Mathematics, 1997
Consider Varadhan's formula, that is (1) \(\lim_{T\downarrow 0}T\log p_T(x,y)=- \frac{\text{dist} (x,y)^2}{2}\) uniformly in \((x,y)\in M\times M\), where \(M\) is a compact connected Riemannian manifold, and \(P_t(x,y)\) is the fundamental solution to Cauchy's initial value problem for the heat equation \(\frac{\partial u}{\partial t}= \frac 12 ...
Stroock, Daniel W., Turetsky, James
openaire   +1 more source

Traceability of Agri‐Food Products: The Key to Conscious Trade

open access: yesAgribusiness, EarlyView.
ABSTRACT Globalization and growing concerns about sustainability have led to improvements in product traceability, quality, and sustainability. Traceability contributes to environmental protection and supports sustainable development by fostering transparency in agricultural practices and encouraging the responsible use of resources.
Scarlett Queen Almeida Bispo   +5 more
wiley   +1 more source

Toeplitz matrix and product Nystrom methods for solving the singular integral equation

open access: yesLe Matematiche, 2002
The Toeplitz matrix and the product Nystrom methods are applied to an integral equation of the second kind. We consider two cases: logarithmic kernel and Hilbert kernel.
M. A. Abdou   +2 more
doaj  

Numerical treatments for solving nonlinear mixed integral equation

open access: yesAlexandria Engineering Journal, 2016
We consider a mixed type of nonlinear integral equation (MNLIE) of the second kind in the space C[0,T]×L2(Ω ...
M.A. Abdou, M. Basseem
doaj   +1 more source

Scale-invariant Mexican Hat wavelet descriptor for non-rigid shape similarity measurement

open access: yesScientific Reports, 2023
The Mexican Hat wavelet (MHW) is strictly derived from the heat kernel by taking its negative first-order derivative with respect to time t. As a solution to the heat equation that the heat kernel has a clear initial condition, the Laplace–Beltrami ...
Yuhuan Yan   +3 more
doaj   +1 more source

Asymptotic behavior of Bergman kernels with logarithmic weight

open access: yesJournal of Mathematical Analysis and Applications, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

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