Results 81 to 90 of about 6,953 (247)

An Algebraic Index Theorem for Non-smooth Economies [PDF]

In this paper, we prove an existence theorem for equilibria in production economies with increasing returns, which generalizes the classic results on this topic.
Gaël Giraud
core  

An ergodic theorem for asymptotically nonexpansive mappings [PDF]

, 1994
The purpose of this paper is to prove the following (nonlinear) mean ergodic theorem: Let E be a uniformly convex Banach space, let C be a nonempty bounded closed convex subset of E and let T: C → C be an asymptotically nonexpansive mapping.
Jaroslaw Górnicki, Manfred Krüppel
core   +1 more source

Predefined-Time Trajectory Tracking of Mechanical Systems with Full-State Constraints via Adaptive Neural Network Control

Mathematics
An adaptive control strategy is developed and analyzed for trajectory tracking of mechanical systems subject to simultaneous model uncertainties and full-state constraints.
Na Liu, Xuan Yu, Jianhua Zhang, Yichen Jiang, Cheng Siong Chin   +4 more
doaj   +1 more source

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

International 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, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Convergence theorems for fixed points of uniformly continuous generalized Φ-hemi-contractive mappings [PDF]

, 2005
Let E be a real normed linear space, K be a nonempty subset of E and T:K→E be a uniformly continuous generalized Φ-hemi-contractive mapping, i.e., F(T):={x∈K:Tx=x}≠Φ, and there exist x∗∈F(T) and a strictly increasing function Φ:[0,∞)→[0,∞), Φ(0)=0 such ...
C.E. Chidume, Chidume, C.E., C.O. Chidume, Chidume, C.O.   +3 more
core   +1 more source

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

International 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, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Analytic continuation and fixed points of the Poincaré mapping for a polynomial Abel equation [PDF]

, 2008
International audienceWe consider an Abel differential equation y′=p(x)y2+q(x)y3 with p(x), q(x) polynomials in x. For two given points a and b in C, the ``Poincar\'e mapping" of the above equation transforms the values of its solutions at a into their ...
Roytvarf, N., Françoise, Jean-Pierre, Yomdin, Y.   +2 more
core   +1 more source

NFDI MatWerk Ontology (MWO): A BFO‐Compliant Ontology for Research Data Management in Materials Science and Engineering

Advanced Engineering Materials, EarlyView.
This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi, Ebrahim Norouzi, Kostiantyn Hubaiev, Jörg Waitelonis, Harald Sack   +4 more
wiley   +1 more source

Strong convergence theorem for accretive mapping in Banach spaces [PDF]

, 2010
Suppose K is a closed convex subset of a real reflexive Banach space E which has a uniformly Gâteaux differentiable norm and every nonempty closed convex bounded subset of E has the fixed point property for nonexpansive mappings.
Zhenhua He, He, Zhenhua
core   +1 more source