Results 1 to 10 of about 2,966 (121)

Euclidean-Lorentzian Dichotomy and Algebraic Causality in Finite Ring Continuum [PDF]

open access: yesEntropy
We present a concise and self-contained extension of the Finite Ring Continuum (FRC) program, showing that symmetry-complete prime shells Fp with p=4t+1 exhibit a fundamental Euclidean-Lorentzian dichotomy.
Yosef Akhtman
doaj   +2 more sources

Interval Ranges of Fuzzy Sets Induced by Arithmetic Operations Using Gradual Numbers

open access: yesMathematics, 2021
Wu introduced the interval range of fuzzy sets. Based on this, he defined a kind of arithmetic of fuzzy sets using a gradual number and gradual sets. From the point of view of soft computing, this definition provides a new way of handling the arithmetic ...
Qingsong Mao, Huan Huang
doaj   +1 more source

Granular computational homogenisation of composite structures with imprecise parameters

open access: yesArchives of Mechanics, 2023
The paper presents the formulation of a granular computational homogenisation problem and the proposition of a method to solve it, which enables multiscale analysis of materials with uncertain microstructure parameters.
W. Beluch, M. Hatłas, J. Ptaszny
doaj   +1 more source

Interval-Based Computation of the Uncertainty in the Mechanical Properties and the Failure Analysis of Unidirectional Composite Materials

open access: yesMathematical and Computational Applications, 2022
An interval-based method is presented to evaluate the uncertainty in the computed mechanical properties and the failure assessment of composite unidirectional (UD) laminates.
Dimitris G. Sotiropoulos   +1 more
doaj   +1 more source

A Rigorous Extension of the Schönhage-Strassen Integer Multiplication Algorithm Using Complex Interval Arithmetic [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2010
Multiplication of n-digit integers by long multiplication requires O(n^2) operations and can be time-consuming. In 1970 A. Schoenhage and V. Strassen published an algorithm capable of performing the task with only O(n log(n)) arithmetic operations over ...
Thomas Steinke, Raazesh Sainudiin
doaj   +1 more source

Numerical Modeling of Heat and Mass Transfer during Cryopreservation Using Interval Analysis

open access: yesApplied Sciences, 2020
In the paper, the numerical analysis of heat and mass transfer proceeding in an axially symmetrical articular cartilage sample subjected to the cryopreservation process is presented.
Anna Skorupa, Alicja Piasecka-Belkhayat
doaj   +1 more source

Tiling by translates of a function: results and open problems

open access: yesDiscrete Analysis, 2021
Tiling by translates of a function: results and open problems, Discrete Analysis 2021:12, 24 pp. Let $f$ be a function from $\mathbb R$ to $\mathbb R$, and for each $\lambda\in\mathbb R$, let $T_\lambda$ be the translate of $f$ by $\lambda$, that is ...
Mihail N. Kolountzakis, Nir Lev
doaj   +1 more source

Multiple recurrence and large intersections for abelian group actions

open access: yesDiscrete Analysis, 2021
Multiple recurrence and large intersections for abelian group actions, Discrete Analysis 2021:18, 91 pp. In 1975, Szemerédi proved his famous theorem that asserts that for every positive integer $k$ and every $\delta>0$ there exists $n$ such that every ...
Ethan Ackelsberg   +2 more
doaj   +1 more source

Approximate Euclidean Ramsey theorems

open access: yesJournal of Computational Geometry, 2011
According to a classical result of Szemerédi, every dense subset of 1,2,…,N contains an arbitrary long arithmetic progression, if N is large enough. Its analogue in higher dimensions due to Fürstenberg and Katznelson says that every dense subset of {1,2,…
Adrian Dumitrescu
doaj   +1 more source

On the Computation of the Survival Probability of Brownian Motion with Drift in a Closed Time Interval When the Absorbing Boundary Is a Step Function

open access: yesJournal of Probability and Statistics, 2015
This paper provides explicit formulae for the probability that an arithmetic or a geometric Brownian motion will not cross an absorbing boundary defined as a step function during a finite time interval.
Tristan Guillaume
doaj   +1 more source

Home - About - Disclaimer - Privacy