Results 61 to 70 of about 303,423 (281)

The Ran-Reurings fixed point theorem without partial order: a simple proof

open access: yes, 2014
The purpose of this note is to generalize the celebrated Ran and Reurings fixed point theorem to the setting of a space with a binary relation that is only transitive (and not necessarily a partial order) and a relation-complete metric.
Ben-El-Mechaiekh, Hichem
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek   +5 more
wiley   +1 more source

A New Approach of Proinov-Type Contractions on Metric Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis
In this paper, we define the classes of Proinov $D-$contraction and generalized Proinov $D-$contraction which are properly larger than the classes of $(\psi,\varphi)-$contraction and generalized $(\psi,\varphi)-$contraction studied by Proinov (2020)  and
Samira Rahrovi   +3 more
doaj   +1 more source

Removal and Contraction Operations in $n$D Generalized Maps for Efficient Homology Computation [PDF]

open access: yes, 2014
In this paper, we show that contraction operations preserve the homology of $n$D generalized maps, under some conditions. Removal and contraction operations are used to propose an efficient algorithm that compute homology generators of $n$D generalized ...
Damiand, Guillaume   +2 more
core   +1 more source

Principles of Contract Languages (Dagstuhl Seminar 22451).

open access: yesDagstuhl Reports, 2023
This report documents the program and the outcomes of Dagstuhl Seminar 22451 "Principles of Contract Languages". At the seminar, participants discussed the fundamental aspects of software contracts. Topics included the format and expressiveness of contracts, their use cases in software development and analysis, and contract composition and ...
Gurov, Dilian   +4 more
openaire   +4 more sources

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Fixed Point Results in Modular b-Metric-like Spaces with an Application

open access: yesAxioms
In this study, we introduce a new space called the modular b-metric-like space. We investigate some properties of this new concept and define notions of ξ-convergence, ξ-Cauchy sequence, ξ-completeness and ξ-contraction.
Nizamettin Ufuk Bostan, Banu Pazar Varol
doaj   +1 more source

Ulam-Hyers Stability and Well-Posedness of Fixed Point Problems for α-λ-Contraction Mapping in Metric Spaces

open access: yesAbstract and Applied Analysis, 2014
We study Ulam-Hyers stability and the well-posedness of the fixed point problem for new type of generalized contraction mapping, so called α-λ-contraction mapping.
Marwan Amin Kutbi, Wutiphol Sintunavarat
doaj   +1 more source

Some Notes on Fixed Point Theorems in ν-generalized Metric Spaces [PDF]

open access: yes, 2015
We study ν-generalized metric spaces. We first study the concept of Cauchy sequence. We next give a proof of the Banach contraction principle in ν-generalized metric spaces.
Alamri, Badriah   +2 more
core   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

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