Results 81 to 90 of about 851,945 (325)
Advanced Materials Technologies, EarlyView.Fully printed bipolar organic thermoelectric generators are fabricated on flexible substrates and characterized entirely under ambient conditions. The devices exhibit Seebeck coefficients up to 30 µV K−1 and output powers up to 8.8 nW, with enhanced performance under bending.
Loup Chopplet +7 more
wiley +1 more source
A Generalization of Kannan's Fixed Point Theorem
Fixed Point Theory and Applications, 2009 In order to observe the condition of Kannan mappings, we prove a generalization of Kannan's fixed point theorem. Our theorem involves constants and we obtain the best constants to ensure a fixed point.
Yusuke Enjouji +2 more
doaj +1 more source
Ultrasound‐Powered, Battery‐Free Implants via Triboelectric Energy Harvesting
Advanced Materials Technologies, EarlyView.Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) present a promising approach to battery‐free implants by combining body‐safe ultrasound with the material and structural versatility of TENGs. This review categorizes current US‐TENG research into long‐term and transient short‐term applications and discusses key challenges in materials, device ...
Youngwook Chung +5 more
wiley +1 more source
On a fixed point theorem of Greguš
International Journal of Mathematics and Mathematical Sciences, 1986 We consider two selfmaps T and I of a closed convex subset C of a Banach space X which are weakly commuting in X, i.e.‖TIx−ITx‖≤‖Ix−Tx‖ for any x in X,and satisfy the inequality‖Tx−Ty‖≤a‖Ix−Iy‖+(1−a)max{‖Tx−Ix‖,‖Ty−Iy‖}for all x, y in C, where ...
Brian Fisher, Salvatore Sessa
doaj +1 more source
Nonlinear Inequality, Fixed Point and NashEquilibrium [PDF]
In this paper, we give new sufficient conditions for the existence of a solution of theg-maximum equality. As a consequence, we prove a new fixed point theorem.
Moussa Larbani +2 more
core
Next Generation of Thermal Barrier Coatings with High Temperature Metal‐Silicide Metamaterials
Advanced Optical Materials, EarlyView.Thermal metamaterials have emerged as a powerful platform in the engineering of radiative heat transfer across a broad range of applications, including thermal imaging, passive cooling, and thermo‐photovoltaics. Here, a novel application is presented for metamaterials: thermal dual barrier coatings (TDBCs).
Ali Jishi +15 more
wiley +1 more source
A New Fixed Point Theorem and Applications
Abstract and Applied Analysis, 2013 A new fixed point theorem is established under the setting of a generalized finitely continuous topological space (GFC-space) without the convexity structure. As applications, a weak KKM theorem and a minimax inequalities of Ky Fan type are also obtained
Min Fang, Xie Ping Ding
doaj +1 more source
Fixed point theorem utilizing operators and functionals
Electronic Journal of Qualitative Theory of Differential Equations, 2012 This paper presents a fixed point theorem utilizing operators and functionals in the spirit of the original Leggett-Williams fixed point theorem which is void of any invariance-like conditions.
Douglas Anderson +3 more
doaj +1 more source
Existence of Perfect Equilibria: A Direct Proof [PDF]
We formulate and prove a modification of Eilenberg-Montgomery fixed-point theorem, which is a generalization of Kakutani’s theorem. It enables us to provide a direct proof of the existence of perfect equilibria in finite normal form games and extensive ...
I. Topolyan
core
Traversable Wormholes and the Brouwer Fixed-Point Theorem [PDF]
, 2020 Peter K. F. Kuhfittig
openalex +1 more source