Results 31 to 40 of about 3,607,197 (285)

Escaping points of the cosine family [PDF]

open access: yes, 2008
We study the dynamics of iterated cosine maps $E\colon z \mapsto ae^z+be^{-z},$ with $a,b \in \C\setminus \{0\}$. We show that the points which converge to infinity under iteration are organized in the form of rays and, as in the exponential family, every escaping point is either on one of these rays or the landing point of a unique ray.
Günter Rottenfusser, Dierk Schleicher
openaire   +1 more source

Approximate controllability of a second-order neutral stochastic differential equation with state dependent delay

open access: yesNonlinear Analysis, 2016
In this paper, the existence and uniqueness of mild solution is initially obtained by use of measure of noncompactness and simple growth conditions. Then the conditions for approximate controllability are investigated for the distributed second-order ...
Sanjukta Das   +2 more
doaj   +1 more source

On the Trigonometric and p-Trigonometric Functions of Elliptical Complex Variables

open access: yesCommunications in Advanced Mathematical Sciences, 2020
In the early 2000s, the geometry of a one-parameter family of generalized complex number systems was studied (Math. Mag. 77(2)(2004)). This family is denoted by Cp.
Kahraman Esen Özen
doaj   +1 more source

A direct computation of a certain family of integrals [PDF]

open access: yesArab Journal of Mathematical Sciences, 2021
Purpose – The authors propose a rather elementary method to compute a family of integrals on the half line, involving positive powers of sin x and negative powers of x, depending on the integer parameters n≥q≥1.
Lorenzo Fornari   +2 more
doaj   +1 more source

The λ-cosine transforms, differential operators, and Funk transforms on Stiefel and Grassmann manifolds

open access: yes, 2021
We introduce a new family of invariant differential operators associated with λ-cosine and Funk-Radon transforms on Stiefel and Grassmann manifolds.
Rubin, B.
core   +1 more source

Influence of Microstepping Signal Shape on Shaft Movement Precision and Torque Variation of the Stepper Motor

open access: yesEnergies, 2021
Stepper motors are widely used in many applications where discrete, precise movement is required. There is a variety of dedicated stepper motor controllers (sometimes referred to as “step sticks”) available on the market.
Bogdan Bednarski   +2 more
doaj   +1 more source

Odd Hyperbolic Cosine-FG Family of Lifetime Distributions

open access: yesJournal of Statistical Theory and Applications (JSTA), 2019
In the present paper, a new family of lifetime distributions is introduced via odd ratio function, the well-known concept in survival analysis and reliability engineering.
Omid Kharazmi   +3 more
doaj   +1 more source

Total Controllability of the Second Order Semi-Linear Differential Equation with Infinite Delay and Non-Instantaneous Impulses

open access: yesMathematical and Computational Applications, 2018
In this manuscript, a stronger concept of exact controllability called Total Controllability has been introduced. Sufficient conditions have been established for the total controllability of the proposed problem.
Dimplekumar N. Chalishajar   +1 more
doaj   +1 more source

Evolution of Spatiotemporal Intensity of Partially Coherent Pulsed Beams with Spatial Cosine-Gaussian and Temporal Laguerre–Gaussian Correlations in Still, Pure Water

open access: yesPhotonics, 2021
A new family of partially coherent pulsed beams with spatial cosine-Gaussian and temporal Laguerre–Gaussian correlations, named spatial cosine-Gaussian and temporal Laguerre–Gaussian correlated Schell-model (SCTLGSM) pulsed beams, is introduced.
Chaoliang Ding   +4 more
doaj   +1 more source

Status of the COSINE Experiment

open access: yes, 2017
The COSINE collaboration is preparing to test an annual modulation signal of the DAMA/LIBRA experiment unambiguously, with a 4$\times$2 array of low-background NaI(Tl) crystals at the Yangyang Underground Laboratory, South Korea.
COSINE Collaboration, Park, Jungsic
core   +1 more source

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