Results 31 to 40 of about 12,226 (312)

Perspective: Photonic flatbands

open access: yesAPL Photonics, 2018
Flatbands are receiving increasing theoretical and experimental attention in the field of photonics, in particular in the field of photonic lattices.
Daniel Leykam, Sergej Flach
doaj   +1 more source

Minimal Generators from Positive and Negative Attributes: Analysing the Knowledge Space of a Mathematics Course

open access: yesInternational Journal of Computational Intelligence Systems, 2022
Formal concept analysis is a data analysis framework based on lattice theory. In this paper, we analyse the use, inside this framework, of positive and negative (mixed) attributes of a dataset, which has proved to represent more information on the use of
Manuel Ojeda-Hernández   +4 more
doaj   +1 more source

Structure of Abrikosov vortices in SU(2) lattice gauge theory [PDF]

open access: yesPhysics Letters B, 1993
15 pages, latex file, three figure postscript files appended, Report No. LSUHEP No.
Singh, V.   +2 more
openaire   +2 more sources

Orbit structure and (reversing) symmetries of toral endomorphisms on rational lattices

open access: yes, 2012
Baake M, Neumärker N. Orbit structure and (reversing) symmetries of toral endomorphisms on rational lattices. Discrete and continuous dynamical systems A.
Neumärker, Natascha, Baake, Michael
core   +1 more source

A characterization of uninorms on bounded lattices via closure and interior operators [PDF]

open access: yes, 2023
summary:Uninorms on bounded lattices have been recently a remarkable field of inquiry. In the present study, we introduce two novel construction approaches for uninorms on bounded lattices with a neutral element, where some necessary and sufficient ...
Çayli, Gül Deniz
core   +1 more source

Toughness enhancement of honeycomb lattice structures through heterogeneous design

open access: yesMaterials & Design, 2022
Inspired by the microstructures feature in the architected composites, which are consisted of a stiff phase and a soft phase, the concept of varying the struts thickness in the uniform honeycomb (UH) is proposed to enhance the toughness of UH structures ...
Xin Shu   +5 more
doaj   +1 more source

Stratification structures on a kind of completely distributive lattices and their applications in the theory of topological molecular lattices

open access: yesFuzzy Sets and Systems, 1997
Basing on the authors' earlier result on direct decompositions of molecular lattices, they give here the definitions of stratification structure, stratified point and stratified molecular lattice. Moreover, they consider the corresponding category \(\Omega\) taking the stratified molecular lattices as objects and the so-called stratification-preserving
Hongbin Cui, Chongyou Zheng
openaire   +1 more source

Bipartite Digraphs with Modular Concept Lattices of height 2

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
This paper investigates the interaction between Formal Concept Analysis (FCA) and graph theory, with a focus on understanding the structure and representation of concept lattices derived from bipartite directed graphs.
A.O. Basheyeva   +2 more
doaj   +1 more source

Strongly correlated and topological states in [111] grown transition metal oxide thin films and heterostructures

open access: yesAPL Materials, 2020
We highlight recent advances in the theory, materials fabrication, and experimental characterization of strongly correlated and topological states in [111] oriented transition metal oxide thin films and heterostructures, which are notoriously difficult ...
Jak Chakhalian   +2 more
doaj   +1 more source

Dulmage-Mendelsohn Percolation: Geometry of Maximally Packed Dimer Models and Topologically Protected Zero Modes on Site-Diluted Bipartite Lattices

open access: yesPhysical Review X, 2022
The classic combinatorial construct of maximum matchings probes the random geometry of regions with local sublattice imbalance in a site-diluted bipartite lattice.
Ritesh Bhola   +3 more
doaj   +1 more source

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