A complete asymptotic expansion for the semi-exponential Post-Widder operators
Abstract In the present paper, we study the asymptotic properties of the semi-exponential Post-Widder operator. It is connected with \(p(x)=x^{2}\).…
2025
g-Loewner Chains and the Graham-Kohr Extension Operator in Complex Banach Spaces
AbstractAuthorsEduard-Stefan Grigoriciuc Eduard Stefan Grigoriciuc Babes-Bolyai University, Cluj-Napoca, Romania KeywordsComplex Banach space, g-Loewner chain, g-starlike mapping, Graham–Kohr extension operator Paper…
Global random walk for one-dimensional one-phase Stefan-type moving-boundary problems: simulation results
Abstract This work presents global random walk approximations of solutions to one-dimensional Stefan-type moving-boundary problems. We are particularly interested in…
Chebyshev collocation solutions to some nonlinear and singular third-order problems relevant to thin-film flows
Abstract This paper concerns accurate spectral collocation solutions, more precisely Chebyshev collocation (ChC), to some third-order nonlinear and singular boundary…
Localization and multiplicity for stationary Stokes systems with variable viscosity
AbstractIn this paper we discuss the localization and the multiplicity of solutions for the stationary Stokes system with variable viscosity…
Control of Semilinear Differential Equations with Moving Singularities
AbstractIn this paper, we present a control problem related to a semilinear differential equation with a moving singularity, i.e., the…
Two complementary approaches of the periodicity detection in astronomical time series
Abstract Estimation of the statistical significance of the peaks appearing in the spectra of various astronomical time series is essential…
Accurate Chebfun solutions to third-order nonlinear BVPs on the half-line. Applications in boundary layer theory
Abstract The paper is devoted to obtaining accurate numerical solutions to some third-order nonlinear boundary problems on the real semi-axis…
Ioan Şerb has passed away
With deep regret we announce that on March 13, 2023, assist. prof. Ioan Şerb, PhD, distinguished mathematician of the Institute,…
Fixed point results for non-self operators R₊^{m}-metric spaces
Abstract The purpose of this paper is to discuss some problems of the fixed point theory for non-self operators on…