Results 11 to 20 of about 12,843,547 (264)

A family of high-order accurate contour integral methods for strongly continuous semigroups

open access: yesCoRR
Exponential integrators based on contour integral representations lead to powerful numerical solvers for a variety of ODEs, PDEs, and other time-evolution equations. They are embarrassingly parallelizable and lead to global-in-time approximations that can be efficiently evaluated anywhere within a finite time horizon.
Andrew J. Horning, Adam R. Gerlach
openaire   +4 more sources

High order continuous polygonal patches [PDF]

open access: yes, 1991
A polygonal patch method is described which can be used to fill a polygonal hole within a given k'th order continuous rectangular patch complex. The method is relatively easy to implement, since it only re- quires Ck extensions of the rectangular patch ...
Gregory, JA, Lau, VKH, Hahn, JM
core   +6 more sources

Continuous Adaptive Finite Reaching Time Control and Second-Order Sliding modes [PDF]

open access: yes, 2013
This paper focuses on the design of adaptive finite reaching time control for first- and second-order dynamic systems with perturbation terms given in a regressive form. The uncertainties considered here are assumed to be bounded with unknown bounds. The
Spurgeon, Sarah K.   +3 more
core   +1 more source

A Continuous Time GARCH Process of Higher Order [PDF]

open access: yes, 2005
A continuous time GARCH model of order (p,q) is introduced, which is driven by a single Lévy process. It extends many of the features of discrete time GARCH(p,q) processes to a continuous time setting.
Lindner, Alexander M.   +2 more
core   +1 more source

Strongly Continuous Domains

open access: yes, 2023
Strong Scott topology introduced by X. Xu and D. Zhao is a kind of newtopology which is finer than upper topology and coarser than Scott topology.Inspired by the topological characterizations of continuous domains andhypercontinuous domains, we introduce
Song, Yinglong   +3 more
core   +1 more source

Microgyroscope control system using a high-order band-pass continuous-time sigma-delta modulator [PDF]

open access: yes, 2007
The paper presents a novel 6th order continuous-time, force-feedback band-pass sigma-delta modulator control system for the detection mode of micromachined vibratory gyroscopes.
Y. Dong   +10 more
core   +1 more source

Strongly order continuous operators on Riesz spaces

open access: yes, 2017
In this paper we introduce two new classes of operators that we call strongly order continuous and strongly $σ$-order continuous operators. An operator $T:E\rightarrow F$ between two Riesz spaces is said to be strongly order continuous (resp. strongly $σ$-order continuous), if $x _α\xrightarrow{uo}0$ (resp.
Bahramnezhad, Akbar   +1 more
openaire   +2 more sources

Approximate controllability of semilinear fractional evolution equations of order α∈(1, 2] with finite delay

open access: yes上海师范大学学报. 自然科学版, 2017
This paper considers the approximate controllability of semilinear fractional evolution equations of order α∈ (1, 2] with finite delay. Using the contraction mapping principle, we explore the existence and uniqueness of the mild solution.
Ma Saisai, Kou Chunhai, Ge Fudong
doaj   +1 more source

Semigroups generated by first order differential operators

open access: yesBruno Pini Mathematical Analysis Seminar
The differentiation operator in a space of continuous or $L^p$ functions defined on an interval generates a translation semigroup. Here we illustrate the generalization of this result to general first-order operators, possibly singular.
Giovanni Dore
doaj   +1 more source

Strongly-coupled quantum critical point in an all-in-all-out antiferromagnet

open access: yesNature Communications, 2018
The critical behavior of a continuous phase transition is determined by both symmetry and dimensionality. Wang et al. present evidence that the cubic all-in-all-out spin order in Cd2Os2O7 leads to a realization of a non-mean-field strongly-coupled ...
Yishu Wang   +6 more
doaj   +1 more source

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