Results 41 to 50 of about 357,419 (186)

Decoupling of Deficiency Indices and Applications to Schr\"odinger-Type Operators with Possibly Strongly Singular Potentials [PDF]

open access: yes, 2016
We investigate closed, symmetric $L^2(\mathbb{R}^n)$-realizations $H$ of Schr\"odinger-type operators $(- \Delta +V)\upharpoonright_{C_0^{\infty}(\mathbb{R}^n \setminus \Sigma)}$ whose potential coefficient $V$ has a countable number of well-separated ...
Gesztesy, Fritz   +3 more
core   +1 more source

A Novel Subclass of Harmonic Functions: Coefficient Bounds, Distortion Bounds, and Closure Properties

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi
In this paper, we introduce a new subclass of harmonic functions that significantly improves our understanding of these functions in geometric function theory. We provide a comprehensive analysis of this subclass by deriving several important properties,
Serkan Çakmak
doaj   +1 more source

Quasi-Concavity for Gaussian Multicast Relay Channels

open access: yes, 2019
Standard upper and lower bounds on the capacity of relay channels are cut-set (CS), decode-forward (DF), and quantize-forward (QF) rates. For real additive white Gaussian noise (AWGN) multicast relay channels with one source node and one relay node ...
Kramer, Gerhard, Thakur, Mohit
core   +1 more source

On a Harmonic Univalent Subclass of Functions Involving a Generalized Linear Operator

open access: yesAxioms, 2020
In this paper, a subclass of complex-valued harmonic univalent functions defined by a generalized linear operator is introduced. Some interesting results such as coefficient bounds, compactness, and other properties of this class are obtained.
Abdeljabbar Talal Yousef   +1 more
doaj   +1 more source

Initial coefficient estimates for a classes of m-fold symmetric bi-univalent functions involving Mittag-Leffler function [PDF]

open access: yesMathematica Moravica, 2020
The main object of the present paper is to use Mittag-Leffler function to introduce and study two new classes RSm(g, l, e, d, t ; a) and R * Sm(g, l, e, d, t ; b) of Sm consisting of analytic and m-fold symmetric bi-univalent functions defined in the ...
Wanas Abbas Kareem, Tang Huo
doaj   +1 more source

Fast Computation of Common Left Multiples of Linear Ordinary Differential Operators

open access: yes, 2012
We study tight bounds and fast algorithms for LCLMs of several linear differential operators with polynomial coefficients. We analyze the arithmetic complexity of existing algorithms for LCLMs, as well as the size of their outputs.
Bostan, Alin   +3 more
core   +4 more sources

Yamaguchi -Noshiro Type Bi-Univalent Functions Associated with Sălăgean-Erdély–Kober Operator

open access: yesMathematics, 2022
We defined two new subclasses of analytic bi-univalent function class Σ, in the open unit disk related with the Sălăgean–Erdély–Kober operator. The bounds on initial coefficients |a2|,|a3| and |a4| for the functions in these new subclasses of Σ are ...
Asma Alharbi   +2 more
doaj   +1 more source

Coefficient of performance at maximum figure of merit and its bounds for low-dissipation Carnot-like refrigerators

open access: yes, 2012
The figure of merit for refrigerators performing finite-time Carnot-like cycles between two reservoirs at temperature $T_h$ and $T_c$ ($
A. Calvo Hernández   +9 more
core   +1 more source

Bounds for Hilbert coefficients

open access: yes, 2007
We compute the Hilbert coefficients of a graded module with pure resolution and discuss lower and upper bounds for these coefficients for arbitrary graded modules.
Herzog, Juergen, Zheng, Xinxian
openaire   +2 more sources

On Coefficient Functionals for Functions with Coefficients Bounded by 1 [PDF]

open access: yesMathematics, 2020
In this paper, we discuss two well-known coefficient functionals a 2 a 4 − a 3 2 and a 4 − a 2 a 3 . The first one is called the Hankel determinant of order 2. The second one is a special case of Zalcman functional. We consider them for functions in the class Q R ( 1 2 ) of analytic functions with real ...
Paweł Zaprawa   +2 more
openaire   +2 more sources

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