Results 71 to 80 of about 662 (278)

Quasirandom permutations

open access: yesJournal of Combinatorial Theory, Series A, 2004
Chung and Graham define quasirandom subsets of $\mathbb{Z}_n$ to be those with any one of a large collection of equivalent random-like properties. We weaken their definition and call a subset of $\mathbb{Z}_n$ $ε$-balanced if its discrepancy on each interval is bounded by $εn$.
openaire   +3 more sources

A characterisation via graphs of the soluble groups in which permutability is transitive [PDF]

open access: yes, 2009
[EN] There are different ways to associate to a group a certain graph. In this context, it is interesting to ask for the relations between the structure of the group, given in group-theoretical terms, and the structure of the graphs, given in the ...
Ballester Bolinches, Adolfo   +2 more
core  

Permutability of Backlund transformation for N=1 supersymmetric sinh-Gordon

open access: yes, 2009
The permutability of two Backlund transformations is employed to construct a nonlinear superposition formula to generate a class of solutions for the N = 1 super sinh-Gordon model. (C) 2009 Elsevier B.V.
Gomes, J. F.   +5 more
core   +1 more source

Discordance Between Systemic Lupus Erythematosus Disease Activity Index Domain Weights and Their Association With Organ Damage Accrual

open access: yesArthritis Care &Research, EarlyView.
Objective Studies of damage accrual in patients with systemic lupus erythematosus (SLE) show associations with disease activity measured by the SLE Disease Activity Index 2000 (SLEDAI‐2K), but these associations are imperfect. SLEDAI scores are powerfully influenced by weightings (1–8) assigned to each domain.
Kevin Zhang   +8 more
wiley   +1 more source

Scaffold permutations

open access: yesDiscrete Mathematics, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Conditional permutability of subgroups and certain classes of groups [PDF]

open access: yes, 2017
[EN] Two subgroups A and B of a finite group G are said to be tcc-permutable if X permutes with Y for some g epsilon (X, Y), for all X
Arroyo Jordá, Milagros   +1 more
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Permutations of a Multiset Avoiding Permutations of Length 3

open access: yesEuropean Journal of Combinatorics, 2001
A sequence of numbers \(\alpha =(a_{1},\dots ,a_{m})\) is contained in a sequence of numbers \(\beta =(b_{1},\dots ,b_{n})\) if there is a subsequence \((b_{i_{1}},\dots,b_{i_{m}})\), \(i_{1}
Michael H. Albert   +4 more
openaire   +2 more sources

On the subgroup permutability degree of some finite simple groups. [PDF]

open access: yes, 2015
PhDConsider a finite group G and subgroups H;K of G. We say that H and K permute if HK = KH and call H a permutable subgroup if H permutes with every subgroup of G. A group G is called quasi-Dedekind if all subgroups of G are permutable. We can define,
Aivazidis, Stefanos
core  

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir   +2 more
wiley   +1 more source

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