Results 11 to 20 of about 37,190 (197)

Discrete complementary exponential and sine integral functions

open access: yesDemonstratio Mathematica, 2023
Discrete analogues of the sine integral and complementary exponential integral functions are investigated. Hypergeometric representation, power series, and Laplace transforms are derived for each.
Assaf Samer, Cuchta Tom
doaj   +1 more source

New Interaction Solutions for a (2 + 1)-Dimensional Vakhnenko Equation

open access: yesComplexity, 2020
In this paper, we focus on the interaction solutions of a (2 + 1)-dimensional Vakhnenko equation. By using Hirota’s transformation combined with the three-wave method and with symbolic computation, some interaction solutions which include interaction ...
Qing Meng, Bin He
doaj   +1 more source

k-Fractional trigonometric functions [PDF]

open access: yes, 2014
Based on the k-Mittag-Lefler function and the k-α-Exponential Function we introduce families of functions that allows us define new fractional trigonometric functions that contain the classical trigonometric functions as particular case for some ...
Cerutti, Ruben Alejandro   +1 more
core   +1 more source

On the shape of the radiation survival curve in tumor spheroids: The role of oxygen heterogeneity. [PDF]

open access: yesMed Phys
Abstract Background The shape of cell survival curves at the tissue level remains an open question in radiobiology. While homogeneous cell populations (so‐called single cells) typically exhibit an exponential decrease in survival with increasing dose, it is unclear whether this behavior persists in multicellular systems, where oxygen and nutrient ...
Schneider U, Liang N, Besserer J.
europepmc   +2 more sources

TIME-HYBRID HEAT AND WAVE EQUATIONS ON SCATTERED 𝑁-DIMENSIONAL COUPLED-JUMPING TIME SCALES

open access: yesПроблемы анализа, 2022
In this paper, the exponential, hyperbolic, and trigonometric functions on 𝑛-dimensional coupled-jumping time scales (CJTS for short) are introduced. Based on this, we introduce the Laplace transform on 𝑛-dimensional CJTS and establish their related ...
Z. Li, C. Wang, R. P. Agarwal
doaj   +1 more source

A fractional q-integral operator associated with a certain class of q-Bessel functions and q-generating series

open access: yesAdvances in Difference Equations, 2021
This paper deals with Al-Salam fractional q-integral operator and its application to certain q-analogues of Bessel functions and power series. Al-Salam fractional q-integral operator has been applied to various types of q-Bessel functions and some power ...
Shrideh Al-Omari   +2 more
doaj   +1 more source

Rogue, multi-wave, homoclinic breather, M-shaped rational and periodic-kink solutions for a nonlinear model describing vibrations

open access: yesResults in Physics, 2021
Our aim in this paper is to determine rogue-wave solutions for Maccari-system. We also construct multi-waves, homoclinic breathers, M-shaped rational and periodic cross kink solutions with the combination of exponential, rational, trigonometric functions
Syed T.R. Rizvi   +5 more
doaj   +1 more source

A new exact quantum mechanical propagator [PDF]

open access: yes, 1987
The authors derive a closed-form expression for the time-dependent propagator for a quantum mechanical particle which is subject to an external force which is the sum of (i) a reflecting half-plane barrier with a straight edge, and (ii) a harmonic force ...
Andel, P.W. van, Wiegel, F.W.
core   +3 more sources

Solitons, one line rogue wave and breather wave solutions of a new extended KP-equation

open access: yesResults in Physics, 2023
The Kadomtsev–Petviashvili equation and its variants play a significant role in the description of several nonlinear phenomena arising in physics. In this paper, a new extension of the Kadomtsev–Petviashvili equation is considered.
Ghazala Akram   +3 more
doaj   +1 more source

Extremal functions in de Branges and Euclidean spaces [PDF]

open access: yes, 2014
In this work we obtain optimal majorants and minorants of exponential type for a wide class of radial functions on $\mathbb{R}^N$. These extremal functions minimize the $L^1(\mathbb{R}^N, |x|^{2\nu + 2 - N}dx)$-distance to the original function, where ...
Carneiro, Emanuel, Littmann, Friedrich
core   +1 more source

Home - About - Disclaimer - Privacy