Results 21 to 30 of about 114,103 (278)

Non-Uniformly Hyperbolic Diffeomorphisms Derived from the Standard Map [PDF]

open access: yesCommunications in Mathematical Physics, 2014
We prove that the system resulting of coupling the standard map with a fast hyperbolic system is robustly non-uniformly hyperbolic.
Berger, Pierre, Carrasco, Pablo D.
openaire   +2 more sources

Higher-derivative supergravity, wrapped M5-branes, and theories of class ℛ $$ \mathrm{\mathcal{R}} $$

open access: yesJournal of High Energy Physics, 2021
We study the interplay between four-derivative 4d gauged supergravity, holography, wrapped M5-branes, and theories of class ℛ $$ \mathrm{\mathcal{R}} $$ .
Nikolay Bobev   +4 more
doaj   +1 more source

Vibration control of semi-active suspension system with magnetorheological damper based on hyperbolic tangent model

open access: yesAdvances in Mechanical Engineering, 2017
In this article, the nonlinear damping characteristics of magnetorheological damper are expressed with hyperbolic tangent model to simulate its mechanical experimental results.
Guoliang Hu   +3 more
doaj   +1 more source

Modeling and control of helicopter flight control system with a controllable Semi-rotary fluid viscous damper

open access: yesAlexandria Engineering Journal, 2022
To improve the handling comfort of Helicopter Flight Control System (HFCS), an adaptive particle swarm optimization optimized variable universe fuzzy proportional-integral-derivative (APSO-VUFPID) strategy for damping force control is proposed.
Xiaoyan Cao   +6 more
doaj   +1 more source

Hyperbolic derivatives and generalized Schwarz-Pick estimates [PDF]

open access: yesProceedings of the American Mathematical Society, 2004
In this paper, by using a formula of Faà di Bruno for the \(n\)th derivative of composition of two functions, the authors obtain the following generalized Schwarz-Pick estimate: for each positive integer \(n\) and each number ...
Ghatage, Pratibha, Zheng, Dechao
openaire   +2 more sources

On the propagation of jump discontinuities in relativistic cosmology [PDF]

open access: yes, 2000
A recent dynamical formulation at derivative level $\ptl^{3}g$ for fluid spacetime geometries $({\cal M}, {\bf g}, {\bf u})$, that employs the concept of evolution systems in first-order symmetric hyperbolic format, implies the existence in the Weyl ...
Bernd G. Schmidt   +26 more
core   +2 more sources

RIGOROUS DERIVATION OF A HYPERBOLIC MODEL FOR TAYLOR DISPERSION [PDF]

open access: yesMathematical Models and Methods in Applied Sciences, 2011
In this paper, we upscale the classical convection-diffusion equation in a narrow slit. We suppose that the transport parameters are such that we are in Taylor's regime, i.e. we deal with dominant Péclet numbers. In contrast to the classical work of Taylor, we undertake a rigorous derivation of the upscaled hyperbolic dispersion equation.
Mikelic, Andro, van Duijn, C.J.
openaire   +3 more sources

Repeated Derivatives of Hyperbolic Trigonometric Functions and Associated Polynomials [PDF]

open access: yesAxioms, 2019
Elementary problems as the evaluation of repeated derivatives of ordinary transcendent functions can usefully be treated with the use of special polynomials and of a formalism borrowed from combinatorial analysis. Motivated by previous researches in this field, we review the results obtained by other authors and develop a complementary point of view ...
Dattoli G.   +3 more
openaire   +2 more sources

Hyperbolic Programs, and Their Derivative Relaxations [PDF]

open access: yesFoundations of Computational Mathematics, 2006
We study the algebraic and facial structures of hyperbolic programs, and examine natural relaxations of hyperbolic programs, the relaxations themselves being hyperbolic programs.
openaire   +1 more source

Fractional-stochastic shallow water equations and its analytical solutions

open access: yesResults in Physics, 2023
In this paper, the stochastic shallow water wave equation with M-Truncated derivative is taken into account. New rational, trigonometric and hyperbolic solutions are produced using the He’s semi-inverse method and modified extended tanh-function method ...
Amjad E. Hamza   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy