Results 121 to 130 of about 2,566 (295)

Conics in projective plane

, 2022
Tato diplomová práce řeší kuželosečky v reálné projektivní rovině. Cílem bylo sepsat srozumitelné a přehledné zavedení kuželoseček v projektivní rovině pro studenty a pedagogy středních škol.
Veselá, Klára Alexandra
core  

Directional Flow of Confined Polaritons in CrSBr

Advanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak, Sichao Yu, Jaime Abad‐Arredondo, Biswajit Datta, Andy Cruz, Sorah Fischer, Kseniia Mosina, Zdeněk Sofer, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Vinod M. Menon   +10 more
wiley   +1 more source

Moderate-density parity-check codes from projective bundles. [PDF]

Des Codes Cryptogr, 2022
Bariffi J, Mattheus S, Neri A, Rosenthal J.   +3 more
europepmc   +1 more source

A short review on the theory of generalized conics

, 2015
Generalized conics are the level sets of functions measuring the average distance from a given set of points. This involves an extension of the concept of conics to the case of infinitely many focuses.
Nagy, Ábris
core  

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

Conic sections in ferroelectric nematics: Experiments and mathematical modeling

Physical Review Research
The domain structure of a fluid ferroelectric nematic is dramatically different from the domain structure of solid ferroelectrics since it is not restricted by rectilinear crystallographic axes and planar surface facets. We demonstrate that thin films of
Priyanka Kumari, Olexandr Kurochkin, Vassili G. Nazarenko, Oleg D. Lavrentovich, Dmitry Golovaty, Peter Sternberg   +5 more
doaj   +1 more source

Recalling Ivory's theorem [PDF]

FME Transactions, 2019
Ivory's Theorem states that in each curvilinear quadrangle of a confocal net of conics the two diagonals have the same lengths. This theorem is valid not only in the Euclidean plane, but also in planar hyperbolic, spherical and pseudo-Euclidean (or ...
Stachel Hellmuth
doaj  

Conics on smooth quartic surfaces

We prove that the maximal number of conics, a priori irreducible of reducible, on a smooth spatial quartic surface is 800, realized by a unique quartic. We also classify quartics with many (at least 720) conics.
Degtyarev, Alex
core  

Secondary school conics with internet

, 2011
Title: Utilization of the internet by teaching conics at high school Author: Bc. Věra Effenberger Department: Department of Mathematics Education Supervisor: RNDr. Jana Hromadová, Ph.D.
Effenberger, Věra
core  

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

Advanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska, Leire Unanue, Itxaso Calafel, Dorleta Otaegui, Jorge L. Olmedo‐Martínez, Lourdes Irusta, Daniel Vinagre, Nora Aranburu, Nerea Casado, Ibon Odriozola, David Mecerreyes   +10 more
wiley   +1 more source