Results 91 to 100 of about 350,941 (326)

LOCATING PERIODIC ORBITS BY TOPOLOGICAL DEGREE THEORY

Libration Point Orbits and Applications, 2003
We consider methods based on the topological degree theory to compute periodic orbits of area preserving maps. Numerical approximations of the Kronecker integral and the application of Stenger's method allows us to compute the value of the topological degree in a bounded region of the phase space.
Polymilis, C., Servizi, G., Skokos, Ch., Turchetti, G., Vrahatis, M. N.   +4 more
openaire   +2 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

Guiding potential method for differential inclusions with nonlocal conditions

Electronic Journal of Differential Equations, 2015
This article shows the existence of solutions to some nonlocal initial-value problems for differential inclusions. The guiding potential method is used and the topological degree theory for admissible multivalued vector fields is applied.
Radoslaw Pietkun
doaj  

Bi-Distance Approach to Determine the Topological Invariants of Silicon Carbide

مجلة بغداد للعلوم
          The use of silicon carbide is increasing significantly in the fields of research and technology. Topological indices enable data gathering on algebraic graphs and provide a mathematical framework for analyzing the chemical structural ...
Abid Mahboob, Muhammad Waheed Rasheed, Jalal Hatem Hussein Bayati, Iqra Hanif, Sajid Mahboob Alam   +4 more
doaj   +1 more source

The topological degree methods for the fractional p(·)-Laplacian problems with discontinuous nonlinearities [PDF]

, 2022
Hasnae El Hammar, Chakir Allalou, Adil Abbassi, Abderrazak Kassidi   +3 more
openalex   +1 more source

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

Advanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang, Gwendoline A. E. Anand, Rubaiyet Haque, Dylan A. Chiaro, Mona Sharma, Andrew R. Williams, Frank Niklaus, Daryl W. Yee, Gavin M. King, Anpan Han   +9 more
wiley   +1 more source

Multifunctional Microstructured Surfaces by Microcontact Printing of Reactive Microgels

Advanced Functional Materials, EarlyView.
Reactive poly(N‐vinylcaprolactam‐co‐glycidyl methacrylate) microgels are used as functional inks to create surface‐grafted arrays on glass via microcontact printing. The patterns (10–50 µm widths and spacings) enable stable binding and post‐functionalization with dyes and peptides.
Inga Litzen, Alexander Töpel, Martin Zenke, Antonio Sechi, Andrij Pich   +4 more
wiley   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Boundary and initial value problems for second-order neutral functional differential equations

Electronic Journal of Differential Equations, 2006
In this paper, we consider the three-point boundary-value problem for the second order neutral functional differential equation $$ u''+ f(t,u_t, u'(t))= 0, quad 0 leq tleq 1, $$ with the three-point boundary condition $u_0= phi$, $u(1) = u ...
Hoan Hoa Le, Thi Phuong Ngoc Le
doaj  

Topological degree theory in fuzzy metric spaces [PDF]

Archivum Mathematicum, 2019
Summary: The aim of this paper is to modify the theory to fuzzy metric spaces, a natural extension of probabilistic ones. More precisely, the modification concerns fuzzily normed linear spaces, and, after defining a fuzzy concept of completeness, fuzzy Banach spaces. After discussing some properties of mappings with compact images, we define the (Leray-
openaire   +2 more sources