Results 1 to 10 of about 18,977 (102)
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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“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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Cancellable elements of the lattices of varieties of semigroups and epigroups [PDF]
Communications in Algebra, 2019 We completely determine all semigroup [epigroup] varieties that are cancellable elements of the lattice of all semigroup [respectively epigroup] varieties.Comment: 17 pages, 3 figures. Compared with the previous version, we add Corollary 1.4 and Figure
B M Vernikov
exaly +3 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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Varieties of distributive rotational lattices [PDF]
, 2013 A rotational lattice is a structure (L;\vee,\wedge, g) where L=(L;\vee,\wedge) is a lattice and g is a lattice automorphism of finite order. We describe the subdirectly irreducible distributive rotational lattices.
A.H. Clifford +14 more
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The distributivity spectrum of Baker's variety [PDF]
, 2020 For every $n$, we evaluate the smallest $k$ such that the congruence inclusion $\alpha (\beta \circ_n \gamma ) \subseteq \alpha \beta \circ_{k} \alpha \gamma $ holds in a variety of reducts of lattices introduced by K. Baker. We also study varieties with
Lipparini, Paolo
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Ideals and congruences in $L$-algebras and pre-$L$-algebras [PDF]
Categories and General Algebraic Structures with ApplicationsWe link the recent theory of $L$-algebras to previous notions of Universal Algebra and Categorical Algebra concerning subtractive varieties, commutators, multiplicative lattices, and their spectra.
Marino Gran +2 more
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