Results 31 to 40 of about 98,608 (306)

Complete intersection lattice ideals [PDF]

open access: yes, 2004
In this paper we completely characterize lattice ideals that are complete intersections or equivalently complete intersections finitely generated semigroups of Zn⊕T with no invertible elements, where T is a finite abelian group.
Thoma, Apostolos   +3 more
core   +1 more source

A new view of relationship between atomic posets and complete (algebraic) lattices

open access: yesOpen Mathematics, 2017
In the context of the atomic poset, we propose several new methods of constructing the complete lattice and the algebraic lattice, and the mutual decision of relationship between atomic posets and complete lattices (algebraic lattices) is studied.
Yu Bin, Li Qingguo, Wu Huanrong
doaj   +1 more source

On categorical aspects of S -quantales

open access: yesOpen Mathematics, 2018
S-quantales are characterized as injective objects in the category of S-posets with respect to certain class of homomorphisms that are order-preserving mappings. This paper is devoted to exhibitions of categorical structures on S-quantales.
Zhang Xia, Zhou Yunyan
doaj   +1 more source

The Lattice Structures of Approximation Operators Based on L-Fuzzy Generalized Neighborhood Systems

open access: yesComplexity, 2021
Following the idea of L-fuzzy generalized neighborhood systems as introduced by Zhao et al., we will give the join-complete lattice structures of lower and upper approximation operators based on L-fuzzy generalized neighborhood systems. In particular, as
Qiao-Ling Song   +5 more
doaj   +1 more source

Semileptonic D-decays with twisted mass QCD on the lattice [PDF]

open access: yes, 2014
We study matrix elements of the "chromomagnetic" operator on the lattice. This operator is contained in the strangeness-changing effective Hamiltonian which describes electroweak effects in the Standard Model and beyond.
Simula S.   +7 more
core   +1 more source

Lattices of fuzzy objects

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
The collection of fuzzy subsets of a set X forms a complete lattice that extends the complete lattice 𝒫(X) of crisp subsets of X. In this paper, we interpret this extension as a special case of the “fuzzification” of an arbitrary complete lattice A. We
Arturo A. L. Sangalli
doaj   +1 more source

L-Fuzzy Prime Spectrums of ADLs

open access: yesAdvances in Fuzzy Systems, 2021
The notion of an Almost Distributive Lattice (ADL) is a common abstraction of several lattice theoretic and ring theoretic generalizations of Boolean algebra and Boolean rings.
Natnael Teshale Amare   +2 more
doaj   +1 more source

CFD and strength analysis of novel biomimetic lattice structure designed for additive manufacturing and post-processing

open access: yesMaterials & Design, 2022
The laborious work of post-processing powder removal from lattice structures made by polymer powder-based additive manufacturing (AM) process is still a major challenge and requires in-depth study. Here, a novel 3D honeycomb shaped lattice structure with
Saurav Verma   +3 more
doaj   +1 more source

Latent Complete-Lattice Structure of Hilbert-Space Projectors

open access: yesQuanta, 2019
To uncover the hidden complete-lattice structure of Hilbert-space projectors, which is not seen by the operator operations and relations (algebraically), resort is taken to the ranges of projectors (to subspaces—to geometry).
Fedor Herbut
doaj   +1 more source

Weak embeddings of posets to the Boolean lattice [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
The goal of this paper is to prove that several variants of deciding whether a poset can be (weakly) embedded into a small Boolean lattice, or to a few consecutive levels of a Boolean lattice, are NP-complete, answering a question of Griggs and of Patkos.
Dömötör Pálvölgyi
doaj   +1 more source

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