Results 31 to 40 of about 1,304,903 (278)
Difference sets and frequently hypercyclic weighted shifts [PDF]
, 2013 We solve several problems on frequently hypercyclic operators. Firstly, we characterize frequently hypercyclic weighted shifts on $\ell^p(\mathbb Z)$, $p\geq 1$.
Bayart, Frédéric, Ruzsa, Imre
core +3 more sources
A New Symmetric Expression of Weyl Ordering
, 2004 For the creation operator $\adag $ and the annihilation operator $a$ of a harmonic oscillator, we consider Weyl ordering expression of $(\adag a)^n$ and obtain a new symmetric expression of Weyl ordering w.r.t. $\adag a \equiv N$ and $a\adag =N+1$ where $
Green H. S. +7 more
core +1 more source
Max-plus fundamental solution semigroups for a class of difference Riccati equations [PDF]
, 2015 Recently, a max-plus dual space fundamental solution semigroup for a class of difference Riccati equation (DRE) has been developed. This fundamental solution semigroup is represented in terms of the kernel of a specific max-plus linear operator that ...
Dower, Peter M., Zhang, Huan
core +2 more sources
COMPACT DIFFERENCES OF COMPOSITION OPERATORS [PDF]
Bulletin of the Australian Mathematical Society, 2008 AbstractLet ϕ andψbe analytic self-maps of the open unit disk. Each of them induces a composition operator,CϕandCψrespectively, acting between weighted Bergman spaces of infinite order. We show that the differenceCϕ−Cψis compact if and only if both operators are compact or both operators are not compact and the pseudohyperbolic distance of the ...
openaire +1 more source
Difference of Normals as a Multi-Scale Operator in Unorganized Point Clouds [PDF]
, 2012 A novel multi-scale operator for unorganized 3D point clouds is introduced. The Difference of Normals (DoN) provides a computationally efficient, multi-scale approach to processing large unorganized 3D point clouds.
, +4 more
core +1 more source
Landau’s inequality for the difference operator [PDF]
Proceedings of the American Mathematical Society, 1988 The best constants for Landau’s inequality with the classical p p -norms are known explicitly only when p = 1 , 2 and ∞ p = 1,2{\text { and }}\infty .
Kwong, Man Kam, Zettl, A.
openaire +2 more sources
On some properties of Schwartz–Gopengauz operator
Lietuvos Matematikos Rinkinys, 2023 The generalization of Schwarz’s derivative proposed by B.E. Gopengauz, which is applied to the study of the properties of the class of functions with nonvanishing in the unit circle divided difference of n-th order is examined.
Eduardas Kirjackis
doaj +3 more sources
Uniqueness of Entire Functions concerning Difference Operator
Abstract and Applied Analysis, 2013 We deal with a uniqueness question of entire functions sharing a nonzero value with their difference operators and obtain some results, which improve the results of Qi et al. (2010) and Zhang (2011).
Chun Wu
doaj +1 more source
A β-Convolution Theorem Associated with the General Quantum Difference Operator
Journal of Function Spaces, 2022 In this paper, we prove some properties of the β-partial derivative. We define the β-convolution of two functions associated with the general quantum difference operator, Dβft=fβt−ft/βt−t; β is a strictly increasing continuous function.
Enas M. Shehata, Rasha M. El Zafarani
doaj +1 more source
Nevanlinna Theory of the Wilson Divided-difference Operator
, 2017 Sitting at the top level of the Askey-scheme, Wilson polynomials are regarded as the most general hypergeometric orthogonal polynomials. Instead of a differential equation, they satisfy a second order Sturm-Liouville type difference equation in terms of ...
Cheng, Kam Hang, Chiang, Yik-Man
core +2 more sources