Results 1 to 10 of about 620 (243)
Fuzzy 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 Aglianò
exaly +6 more sources
Artificial kagome lattices of Shockley surface states patterned by halogen hydrogen-bonded organic frameworks [PDF]
Nature CommunicationsArtificial 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
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Topological mechanical metamaterial for robust and ductile one-way fracturing [PDF]
Nature CommunicationsFracturing 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
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Varieties of bounded K-lattices
Fuzzy 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
exaly +4 more sources
“Polymerization” of Bimerons in Quasi-Two-Dimensional Chiral Magnets with Easy-Plane Anisotropy [PDF]
NanomaterialsWe 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
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Complexity of hypersubstitutions and lattices of varieties
Discussiones Mathematicae - General Algebra and Applications, 2003 The authors develop a general theory of complexity of terms and apply it to define complexity functions for hypersubstitutions. They observe that each complexity function satisfying a certain monotonicity axiom gives rise to a hierarchy of submonoids of the monoid of all hypersubstitutions of a given type and hence to a hierarchy of complete ...
Changphas, Thawhat +1 more
core +5 more sources
On lattices of varieties of restriction semigroups
Semigroup Forum, 2012 In the abstract of the paper the author writes: ``The left restriction semigroups have arisen in a number of contexts, one being as the abstract characterization of semigroups of partial maps, another as the `weakly left E-ample' semigroups of the `York school', and, more recently as a variety of unary semigroups defined by a set of simple identities.''
Jones, Peter R.
openaire +5 more sources
Order Filter Model for Minuscule Plücker Relations [PDF]
Discrete 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
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Stone Commutator Lattices and Baer Rings
Discussiones 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
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On tractability and congruence distributivity [PDF]
Logical 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
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