Results 21 to 30 of about 984,171 (259)
Algorithms, 2022 We develop a numerical method for solving three-dimensional problems of fluid filtration and absorption in a piecewise homogeneous medium by means of boundary integral equations.
Alexey Setukha, Rufina Tretiakova
doaj +1 more source
Frontiers in Physics, 2022 In the steady-state picture, the magnetic field can be formulated by a curl-free potential field in the magnetosheath region, and the sheath field is uniquely and linearly determined by the upstream field and the transformation matrix which contains the ...
S. Toepfer, Y. Narita, D. Schmid
doaj +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2020 In the present paper we consider the Neumann problem for the $n$-dimensional Helmholtz equation. In particular we deal with the problem of representability of the solutions by means of double layer potentials.
Alberto Cialdea +2 more
doaj +1 more source
Numerical Study for Unsteady Waves Generated by Flow over a Permeable Wavy Bed
Fluids, 2021 In this paper, we formulate a numerical model to study unsteady waves generated by fluid flow over a permeable wavy bed. The model is derived from boundary value problems using potential theory.
Ikha Magdalena, Kemal Firdaus
doaj +1 more source
Hydrodynamic Characteristics of Floating Photovoltaic Systems under Ocean Loads
Journal of Marine Science and Engineering, 2023 The floating photovoltaic (FPV) array, which consists of tens or hundreds of rows of floating photovoltaic systems, exhibits great economic and environmental benefits.
Jiahui Song +3 more
doaj +1 more source
Axioms, 2023 The boundary element method (BEM) is used by applying Cauchy’s formula to the boundary of the water movement domain under a dam. By approximating the border with a polygon through linear interpolation, the relationships between the complex velocities on ...
Elena Corina Cipu
doaj +1 more source
Generating Function Method for Calculating the Potentials of Inhomogeneous Polyhedra
Frontiers in Physics, 2022 We propose a method of constructing analytical, closed-form expressions for electrostatic/Newtonian potentials of non-uniform polyhedral bodies, in which the density distributions are polynomials of coordinates.
Alexey Vladimirovich Nenashev +1 more
doaj +1 more source
A Potential Theory for Supermartingales
The Annals of Mathematical Statistics, 1968 A potential theory for supermartingales is presented below. It is much like the classical Newtonian potential theory and is a generalization of the potential theory for transient Markov chains. While dealing with stochastic processes with more general dependence relations the new theory retains what we believe to be the important features of the ...
openaire +2 more sources
On generalizations of some fixed point theorems in semimetric spaces with triangle functions
Frontiers in Applied Mathematics and StatisticsIn the present study, we prove generalizations of Banach, Kannan, Chatterjea, Ćirić-Reich-Rus fixed point theorems, as well as of the fixed point theorem for mapping contracting perimeters of triangles.
Evgeniy Petrov +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Cup‐like nuclei are a distinctive morphological feature observed in certain cases of acute lymphoblastic leukemia (ALL). We provide evidence that they characterize DUX4/ERG ALL independently of IKZF1 deletion and reveal marked mitochondrial accumulation in this ALL subset.
Chloé Arfeuille +9 more
wiley +1 more source