Results 61 to 70 of about 4,912,920 (327)
The Fixed Point Property of Non-Retractable Topological Spaces
Mathematics, 2019 Unlike the study of the fixed point property (FPP, for brevity) of retractable topological spaces, the research of the FPP of non-retractable topological spaces remains. The present paper deals with the issue.
Jeong Min Kang, Sang-Eon Han, Sik Lee
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3D‐Printed Architected Material for the Generation of Foam‐Based Protective Equipment
Advanced Engineering Materials, EarlyView.This study investigates 3D‐printed architected structures as alternatives to traditional foams in protective gear. It focuses on customizing impact strength and damping through design and manufacturing integration. Testing shows these structures outperform conventional foams, offering enhanced customizability, lower weight, and tunable performance ...
Ali Zolfagharian +5 more
wiley +1 more source
Sierpinski Objects in the Category IVIF-TOP and Its Related Categories IVF-TOP and IF-TOP
Fuzzy Information and Engineering, 2014 We identify a Sierpinski object in each of the three categories of interval-valued I-fuzzy topological spaces, interval-valued fuzzy topological spaces, and I-fuzzy topological spaces and, among other things, use these to characterize them and their ...
Rana Noor, Arun K. Srivastava
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Neutrosophic generalized b-closed sets in Neutrosophic topological spaces
Journal of Physics: Conference Series, 2018 Smarandache introduced and developed the new concept of Neutrosophic set from the Intuitionistic fuzzy sets. A.A. Salama introduced Neutrosophic topological spaces by using the Neutrosophic crisp sets.
C. Maheswari +2 more
semanticscholar +1 more source
On the Depth of Topological Spaces [PDF]
Proceedings of the American Mathematical Society, 1974 In this short note we prove that Kowalsky’s star-space of weight ω 1 {\omega _1} is a suitable counterexample to a conjecture of I. Juhàsz.
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Advanced Engineering Materials, EarlyView.Cubic Bézier curves are used in the synthesis of novel surface‐based metamaterials with tunable mechanical properties. Surface‐based geometries are 3D printed and tested in compression. The resulting mechanical properties are correlated to changes in the shape of the base curve, with high potential in energy absorption through the adjustment of their ...
Alberto Álvarez‐Trejo +2 more
wiley +1 more source
Summability in topological spaces
Applied Mathematics Letters, 2011 Abstract The main purpose of the paper is to introduce the notion of summability in abstract Hausdorff topological spaces. We give a characterization of such summability methods when the space allows a countable base. We also provide several Tauberian theorems in topological structures. Some open problems are discussed.
Cakalli, H., Khan, M. K.
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Advanced Engineering Materials, EarlyView.Ti‐6Al‐4V samples produced by laser‐powder bed fusion are tested for static and dynamic mechanical properties to systematically evaluate the effects of surface roughness and internal porosity when using productivity parameters. The most detrimental impact to fatigue is caused by surface roughness, lack of fusion and keyhole porosity in descending order.
Julian Emanuel Gunther Schulz +4 more
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Journal of Mathematical Analysis and Applications, 1981 AbstractIn this paper, a few separation properties and some aspects of subspace fuzzy topology have been studied, where both the crisp and the fuzzy elements have been taken into consideration. Since the conventional definition of compactness is not quite meaningful in Hausdorff fuzzy spaces (as introduced by us), a new more natural definition of ...
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Advanced Engineering Materials, EarlyView.Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos +8 more
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