Results 1 to 10 of about 165,943,886 (264)

Varieties of K-lattices

open access: yesFuzzy Sets and Systems, 2022
In this paper we deal with varieties of commutative residuated lattices that arise from a specific kind of construction: the {\em twist-product} of a lattice. Twist-products were first considered by Kalman in 1958 to deal with order involutions on plain lattices, but the extension of this concept to residuated lattices has attracted some attention ...
Paolo Agliano'
exaly   +8 more sources

Varieties of bounded K-lattices [PDF]

open access: yesFuzzy Sets and Systems, 2022
In this paper we continue to study varieties of K-lattices, focusing on their bounded versions. These (bounded) commutative residuated lattices arise from a specific kind of construction: the {\em twist-product} of a lattice. Twist-products were first considered by Kalman in 1958 to deal with order involutions on plain lattices, but the extension of ...
Paolo Aglianò, Miguel Andrés Marcos
openaire   +4 more sources

Artificial kagome lattices of Shockley surface states patterned by halogen hydrogen-bonded organic frameworks [PDF]

open access: yesNature Communications
Artificial electronic kagome lattices may emerge from electronic potential landscapes using customized structures with exotic supersymmetries, benefiting from the confinement of Shockley surface-state electrons on coinage metals, which offers a flexible ...
Ruoting Yin   +16 more
doaj   +2 more sources

Topological mechanical metamaterial for robust and ductile one-way fracturing [PDF]

open access: yesNature Communications
Fracturing is unavoidable and threatens the reliability and functionality of materials. Therefore, regulating the propagation of cracks in a predictable and ductile manner is of paramount importance.
Xinyu Wang   +3 more
doaj   +2 more sources

“Polymerization” of Bimerons in Quasi-Two-Dimensional Chiral Magnets with Easy-Plane Anisotropy [PDF]

open access: yesNanomaterials
We re-examine the internal structure of bimerons, which are stabilized in easy-plane chiral magnets and represent coupled states of two merons with the same topological charge |1/2| but with opposite vorticity and the polarity.
Natsuki Mukai, Andrey O. Leonov
doaj   +2 more sources

Order Filter Model for Minuscule Plücker Relations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
The Plücker relations which define the Grassmann manifolds as projective varieties are well known. Grass-mann manifolds are examples of minuscule flag manifolds.
David C Lax
doaj   +1 more source

Stone Commutator Lattices and Baer Rings

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2022
In this paper, we transfer Davey‘s characterization for κ -Stone bounded distributive lattices to lattices with certain kinds of quotients, in particular to commutator lattices with certain properties, and obtain related results on prime, radical ...
Mureşan Claudia
doaj   +1 more source

The Lattice of Varieties of Implication Semigroups [PDF]

open access: yesOrder, 2019
Compared with the previous version, we rewrite Section 3 and add Appendixes A and ...
Sergey V. Gusev   +2 more
openaire   +3 more sources

On tractability and congruence distributivity [PDF]

open access: yesLogical Methods in Computer Science, 2007
Constraint languages that arise from finite algebras have recently been the object of study, especially in connection with the Dichotomy Conjecture of Feder and Vardi.
Emil Kiss, Matthew Valeriote
doaj   +1 more source

Varieties of Lattices with Geometric Descriptions [PDF]

open access: yesOrder, 2011
A lattice L is spatial if every element of L is a join of completely join-irreducible elements of L (points), and strongly spatial if it is spatial and the minimal coverings of completely join-irreducible elements are well-behaved. Herrmann, Pickering, and Roddy proved in 1994 that every modular lattice can be embedded, within its variety, into an ...
Luigi Santocanale, Friedrich Wehrung
openaire   +6 more sources

Home - About - Disclaimer - Privacy