Results 61 to 70 of about 30,409 (195)

Laguerre-type derivatives: Dobinski relations and combinatorial identities [PDF]

open access: yes, 2009
We consider properties of the operators D(r,M)=a^r(a^\dag a)^M (which we call generalized Laguerre-type derivatives), with r=1,2,..., M=0,1,..., where a and a^\dag are boson annihilation and creation operators respectively, satisfying [a,a^\dag]=1.
A. Horzela   +9 more
core   +3 more sources

Probabilistic multi-Stirling numbers of the second kind associated with random variables

open access: yesApplied Mathematics in Science and Engineering
This paper investigates a probabilistic extension of the multi-Stirling numbers of the second kind and a ‘poly' version of the probabilistic degenerate Lah-Bell polynomials.
Xiangjing Liu   +4 more
doaj   +1 more source

The Hankel Transform of q-Noncentral Bell Numbers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2015
We define two forms of q-analogue of noncentral Stirling numbers of the second kind and obtain some properties parallel to those of noncentral Stirling numbers.
Cristina B. Corcino   +4 more
doaj   +1 more source

On Degenerate Truncated Special Polynomials

open access: yesMathematics, 2020
The main aim of this paper is to introduce the degenerate truncated forms of multifarious special polynomials and numbers and is to investigate their various properties and relationships by using the series manipulation method and diverse special proof ...
Ugur Duran, Mehmet Acikgoz
doaj   +1 more source

Degenerate Derangement Polynomials and Numbers

open access: yesFractal and Fractional, 2021
In this paper, we consider a new type of degenerate derangement polynomial and number, which shall be called the degenerate derangement polynomials and numbers of the second kind.
Minyoung Ma, Dongkyu Lim
doaj   +1 more source

Rethinking the Normative Foundations of the Stakeholder Theory Through the Civil Economy Approach: Insights From a Relationality‐Based Anthropological Perspective

open access: yesBusiness Ethics, the Environment &Responsibility, EarlyView.
ABSTRACT A growing enthusiasm to reconsider the normative foundations of the stakeholder theory is spreading in related literature. Current research mainly focuses on religious, spiritual, and philosophical underpinnings to reexamine these foundations.
Roberta Sferrazzo   +2 more
wiley   +1 more source

Three Representations for Set Partitions

open access: yesIEEE Access, 2021
The Set Partitioning Problem (SPP) aims to obtain non-empty disjoint subsets of objects such that their union equals the whole set of objects, and the partition meets some prespecified criteria.
Jose Torres-Jimenez   +4 more
doaj   +1 more source

Combinatorics and Boson normal ordering: A gentle introduction

open access: yes, 2007
We discuss a general combinatorial framework for operator ordering problems by applying it to the normal ordering of the powers and exponential of the boson number operator.
A. Horzela   +12 more
core   +1 more source

Evidence for increased background neural noise in migraine with aura: Hyperactive but not hyperresponsive

open access: yesHeadache: The Journal of Head and Face Pain, EarlyView.
Abstract Objective This study had two aims: (1) to investigate the contrast gain in migraine and compare it to that in photosensitive epilepsy; (2) to explore any effects of colored spectacles (precision ophthalmic tints [POT]) on contrast gain. Background Individuals with migraine with aura (MA) typically show high amplitude electrophysiological ...
Louise O'Hare   +2 more
wiley   +1 more source

Normal Order: Combinatorial Graphs

open access: yes, 2003
A conventional context for supersymmetric problems arises when we consider systems containing both boson and fermion operators. In this note we consider the normal ordering problem for a string of such operators.
Blasiak, Pawel   +4 more
core   +2 more sources

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