Results 71 to 80 of about 834,629 (316)
A Fixed Point Theorem Based on Miranda
Fixed Point Theory and Applications, 2007 A new fixed point theorem is proved by using the theorem of Miranda.
Uwe Schäfer
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AI‐Driven Defect Engineering for Advanced Thermoelectric Materials
Advanced Materials, EarlyView.This review presents how AI accelerates the design of defect‐tuned thermoelectric materials. By integrating machine learning with high‐throughput data and physics‐informed representations, it enables efficient prediction of thermoelectric performance from complex defect landscapes.
Chu‐Liang Fu +9 more
wiley +1 more source
The Nanosprouts Structural Inhomogeneity of Organic Semiconductors and the Optical Memory Properties
Advanced Materials Technologies, EarlyView.A flexible nonvolatile organic optical memory transistor (OMT) array is demonstrated with simplified architecture, exhibiting integrated image recognition and storage functions. The organic semiconductors exhibit intrinsic memory properties arising from structural inhomogeneity.
Lizhi Yan +6 more
wiley +1 more source
A fixed point theorem for non-negative functions
AIMS MathematicsIn this paper, we are concerned with the study of the existence and uniqueness of fixed points for the class of functions $ f: C\to C $ satisfying the inequality$ \ell\left(\alpha f(t)+(1-\alpha)f(s)\right)\leq \sigma \ell(\alpha t+(1-\alpha)s) $for
Hassen Aydi +2 more
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A fixed point theorem for contraction mappings
International Journal of Mathematics and Mathematical Sciences, 1982 Let S be a closed subset of a Banach space E and f:S→E be a strict contraction mapping. Suppose there exists a mapping h:S→(0,1] such that (1−h(x))x+h(x)f(x)∈S for each x∈S. Then for any x0∈S, the sequence {xn} in S defined by xn+1=(1−h(xn))xn+h(xn)f(xn),
V. M. Sehgal
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Advanced Materials Technologies, EarlyView.New theoretical model for vertical contact and separation mode triboelectric nanogenerator is proposed. Detailed derivation process and results are discussed. Numerical solutions and parametric studies are presented. Calculated results are validated by experimental outcomes.
Seokjin Kim +2 more
wiley +1 more source
On the Brouwer fixed point theorem
Topology and its Applications, 2002 The author studies the Brouwer-type fixed point theorem for multivalued mappings which are continuous with respect to the Borsuk continuity metric and have spheric-type values. By using deep topological methods, the fixed-point problem is expressed in terms of sphere bundles over manifolds. New methods in the fixed-point problem are presented.
openaire +2 more sources
3D Meta‐Atoms for High Confinement of Mid‐IR Radiation
Advanced Optical Materials, EarlyView.Mid‐infrared, three‐dimensional circuit‐like resonators with extreme field confinement are experimentally demonstrated. Combining simulations, measurements, and analytical modelling, a physical interpretation and prediction of the resonant modes supported by the structure, including their resonant frequency and radiative and non‐radiative losses, is ...
Francesco Pisani +5 more
wiley +1 more source
Quantum Emitters in Rhombohedral Boron Nitride
Advanced Optical Materials, EarlyView.Rhombohedral boron nitride (rBN) is an emerging wide‐bandgap van der Waals (vdW) material with strong second‐order nonlinear optical properties. In this work, optically‐addressable spin defects and single‐photon emitters (SPEs) are fabricated deterministically in rBN.
Angus Gale +10 more
wiley +1 more source
A fractional order Monkeypox model with protected travelers using the fixed point theorem and Newton polynomial interpolation. [PDF]
Healthc Anal (N Y), 2023 Adom-Konadu A +4 more
europepmc +1 more source