Results 1 to 10 of about 27,389 (148)

Time discretization from noncommutativity

Physics Letters B, 2021
We show that a particular noncommutative geometry, sometimes called angular or ρ-Minkowski, requires that the spectrum of time be discrete. In this noncommutative space the time variable is not commuting with the angular variable in cylindrical ...
Fedele Lizzi, Patrizia Vitale
doaj   +4 more sources

Addendum: Unified framework for open quantum dynamics with memory [PDF]

Nature Communications
This Addendum presents a detailed analysis of the discretization error in time-integration and time-derivative that appear in the Nakajima-Zwanzig equation. This was brought to our attention by Makri et al. [arXiv:2410.08239].
Ruojing Peng, Felix Ivander, Lachlan P. Lindoy, Joonho Lee   +3 more
doaj   +2 more sources

Discretization Method of Continuous-Time Dynamic Linear Model [PDF]

International Journal of Electronics and Telecommunications, 2023
The article presents a new discretization method of a continuous-time linear model of sensor dynamics. It can be useful to reduce measuring errors related to the inertia of the sensor.
Sławomir Gryś, Waldemar Minkina
doaj   +1 more source

Numerical Solutions of Fractional Differential Equations by Using Laplace Transformation Method and Quadrature Rule

Fractal and Fractional, 2021
This paper introduces an efficient numerical scheme for solving a significant class of fractional differential equations. The major contributions made in this paper apply a direct approach based on a combination of time discretization and the Laplace ...
Samaneh Soradi-Zeid, Mehdi Mesrizadeh, Carlo Cattani   +2 more
doaj   +1 more source

A New Compact WENO5 Scheme

Journal of Harbin University of Science and Technology, 2020
With the continuous deepening of scientific research, the current calculation schemes is still unable to meet the requirements of high accuracy, high resolution, high efficiency and high stability for numerical simulation of fluid mechanics.
SUN Yang, LI Xinghua, AI Xiaohui
doaj   +1 more source

Discrete time quasicrystals [PDF]

Physical Review B, 2019
Version accepted for publication in Phys. Rev.
Giergiel, Krzysztof, Kuroś, Arkadiusz, Sacha, Krzysztof   +2 more
openaire   +3 more sources

Difference Discretization Method for Milling Stability Prediction

Metals, 2023
This paper proposes a difference discretization method (DDM) under a difference frame for the prediction of milling stability. In this method, the dynamic milling process is described by a delay differential equation (DDE) with two degrees of freedom ...
Chenxi Wang
doaj   +1 more source

Time-Darts: A Data Structure for Verification of Closed Timed Automata [PDF]

Electronic Proceedings in Theoretical Computer Science, 2012
Symbolic data structures for model checking timed systems have been subject to a significant research, with Difference Bound Matrices (DBMs) still being the preferred data structure in several mature verification tools.
Jiří Srba, Kim G. Larsen, Kenneth Y. Jørgensen   +2 more
doaj   +1 more source

A Stable and High Accurate Numerical Simulator for Convection-Diffusion Equation

Journal of Advanced Research in Natural and Applied Sciences, 2022
This study presents a simulator to obtain numerical solution of convection-diffusion equation. It includes explicit, fully implicit and semi-implicit time discretization techniques.
Osman Ünal
doaj   +1 more source

Existence of a Unique Weak Solution to a Nonlinear Non-Autonomous Time-Fractional Wave Equation (of Distributed-Order)

Mathematics, 2020
We study an initial-boundary value problem for a fractional wave equation of time distributed-order with a nonlinear source term. The coefficients of the second order differential operator are dependent on the spatial and time variables.
Karel Van Bockstal
doaj   +1 more source