Results 61 to 70 of about 1,609 (176)

“Addition” theorems for some $q$-exponential and $q$-trigonometric functions [PDF]

Methods and Applications of Analysis, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Forecasting Count Data With Varying Dispersion: A Latent‐Variable Approach

Journal of Forecasting, Volume 45, Issue 4, Page 1985-2000, July 2026.
ABSTRACT Count data, such as product sales and disease case counts, are common in business forecasting and many areas of science. Although the Poisson distribution is the best known model for such data, its use is severely limited by its assumption that the dispersion is a fixed function of the mean, which rarely holds in real‐world scenarios.
Easton Huch, Candace Berrett, Mason Ferlic, Kimberly F. Sellers   +3 more
wiley   +1 more source

A Completeness Theorem for Trigonometric Identities and Various Results on Exponential Functions [PDF]

Proceedings of the American Mathematical Society, 1986
All valid identities in terms of variables, real constants, the arithmetic operations of addition and multiplication, and the trigonometric operations of sine and cosine are shown to be consequences of a few familiar identities and numerical facts. We also indicate how to decide whether
openaire   +1 more source

A Convergent Fourier Spectral Galerkin Method for the Fractional Camassa–Holm Equation

Numerical Methods for Partial Differential Equations, Volume 42, Issue 4, July 2026.
ABSTRACT We analyze a Fourier spectral Galerkin method for the fractional Camassa–Holm (fCH) equation involving a fractional Laplacian of exponent α∈[1,2]$$ \alpha \in \left[1,2\right] $$ with periodic boundary conditions. The semi‐discrete scheme preserves both mass and energy invariants of the fCH equation.
Mukul Dwivedi, Andreas Rupp
wiley   +1 more source

Analytical calculation of a class of integrals containing exponential and trigonometric functions [PDF]

Mathematics of Computation, 1983
It is shown how to evaluate analytically integrals from 0 to 2 π
openaire   +1 more source

Modelling medical data using the cosine generalized exponential distribution

Array
The volume of data accessible for analysis is expanding rapidly, necessitating the development of new probability distributions to better represent each phenomenon or experiment researched.
Laban Gasper, Srinivasa Rao Gadde, Peter Josephat Kirigiti   +2 more
doaj   +1 more source

Exact traveling wave solutions to the (3+1)-dimensional mKdV–ZK and the (2+1)-dimensional Burgers equations via exp(−Φ(η))-expansion method

Alexandria Engineering Journal, 2015
In this work, the exact traveling wave solutions to the (3+1)-dimensional mKdV–ZK equation and the (2+1)-dimensional Burgers equation are studied using the exp(-Φ(η))-expansion method.
Md. Nur Alam, M.G. Hafez, M. Ali Akbar, Harun-Or- Roshid   +3 more
doaj   +1 more source