Results 61 to 70 of about 4,918 (271)

Complete regularity of linear cocycles and the Baire category of the set of Lyapunov-Perron regular points

open access: yesForum of Mathematics, Sigma
Given a continuous linear cocycle $\mathcal {A}$ over a homeomorphism f of a compact metric space X, we investigate its set $\mathcal {R}$ of Lyapunov-Perron regular points, that is, the collection of trajectories of f that obey the ...
Jairo Bochi, Yakov Pesin, Omri Sarig
doaj   +1 more source

Fixed Points in Multiplicative Metric Spaces

open access: yesGeneral Mathematics
Abstract In this article, using only our recent concept of occasionally weakly biased mappings of type ( A ), in multiplicative metric spaces, we could find unique common fixed points.
Hakima Bouhadjera   +2 more
openaire   +1 more source

Fixed points of multiplicative contraction mappings on multiplicative metric spaces

open access: yesJournal of Engineering Technology and Applied Sciences, 2017
In this paper, we first discussed multiplicative metric mapping by giving some topological properties of the relevant multiplicative metric space. As an interesting result of our discussions, we observed that the set of positive real numbers R_+ is a complete multiplicative metric space with respect to the multiplicative absolute value function ...
openaire   +3 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

A Link Between the Multiplicative and Additive Functional Asplund’s Metrics

open access: yes, 2019
International audienceFunctional Asplund's metrics were recently introduced to perform pattern matching robust to lighting changes thanks to double-sided probing in the Logarithmic Image Processing (LIP) framework.
Noyel, Guillaume, Guillaume Noyel
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

Common Fixed Points for Multiplicative Contractions in Multiplicative Metric Spaces

open access: yesWuhan University Journal of Natural Sciences
The study delves into multiplicative contractions, exploring the existence and uniqueness of common fixed points for a weakly compatible pair of mappings. Those mappings adhere to specific multiplicative contraction conditions characterized by exponents expressed as fraction multiplicative metric spaces.
Jiping SONG, Tianqi LUO, Lei LEI
openaire   +1 more source

Metric Graph Approximations of Geodesic Spaces

open access: yes, 2023
We study the question of approximating a compact geodesic metric space by metric graphs satisfying a uniform upper bound on their first Betti number. We prove that, up to a suitable multiplicative constant, Reeb graphs of distance functions to a point ...
Wang, Qingsong   +2 more
core  

Invariant measures whose supports possess the strong open set property [PDF]

open access: yesOpuscula Mathematica, 2008
Let \(X\) be a complete metric space, and \(S\) the union of a finite number of strict contractions on it. If \(P\) is a probability distribution on the maps, and \(K\) is the fractal determined by \(S\), there is a unique Borel probability measure ...
Gerald S. Goodman
doaj  

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

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