Results 21 to 30 of about 98,608 (306)

Improved hadronic measurements and spectral sums on the lattice [PDF]

open access: yes, 2008
In this thesis we address several topics of lattice QCD. As a first project we perform calculations of ground and excited states of light mesons. Especially the extraction of the excited states turns out be very difficult.
Hagen, Christian
core   +1 more source

Kernels of Residuated Maps as Complete Congruences in Lattices

open access: yesInternational Journal of Computational Intelligence Systems, 2020
In a context of lattice-valued functions (also called lattice-valued fuzzy sets), where the codomain is a complete lattice L, an equivalence relation defined on L by the equality of related cuts is investigated.
Branimir Šešelja, Andreja Tepavčević
doaj   +1 more source

Multiscale expansion and integrability properties of the lattice potential KdV equation [PDF]

open access: yes, 2008
We apply the discrete multiscale expansion to the Lax pair and to the first few symmetries of the lattice potential Korteweg-de Vries equation. From these calculations we show that, like the lowest order secularity conditions give a nonlinear Schrödinger
Decio Levi   +10 more
core   +2 more sources

“Complete-simple” distributive lattices [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
It is well known that the only simple distributive lattice is the two-element chain. We can generalize the concept of a simple lattice to complete lattices as follows: a complete lattice is complete-simple if it has only the two trivial complete congruences.
Grätzer, G., Schmidt, E. T.
openaire   +1 more source

Tensor-based trapdoors for CVP and their application to public key cryptography [PDF]

open access: yes, 1999
We propose two trapdoors for the Closest-Vector-Problem in lattices (CVP) related to the lattice tensor product.
Jean-Pierre Seifert   +3 more
core   +1 more source

A complete axiomatisation of logic of lattice effect algebras [PDF]

open access: yes, 2021
In a recent work Foulis and Pulmannová (Stud. Logica. 100(6), 1291–1315, 2012) studied the logical connectives in lattice effect algebras. In this paper we extend their study and investigate further the logical calculus for which the lattice effect ...
Sharafi, Amirhossein   +2 more
core   +3 more sources

Quotients and subalgebras of sup-algebras; pp. 311–322 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2015
An ordered algebra is called a sup-algebra if its underlying poset is a complete lattice and its operations are compatible with joins in each variable. In this article we study quotients and subalgebras of sup-algebras.
Xia Zhang, Valdis Laan
doaj   +1 more source

On a complete lattice of retracts of a free monoid generated by three elements [PDF]

open access: yesOpuscula Mathematica, 2008
We prove that the family of retracts of a free monoid generated by three elements, partially ordered with respect to the inclusion, is a complete lattice.
Wit Foryś
doaj  

On sublattices of the lattice of all ω-composition formations of finite groups [PDF]

open access: yesAdvances in Group Theory and Applications, 2018
It is proved that the lattice of all ω-local formations is a complete sublattice of the lattice of all ω-composition formations of finite groups.
Nikolay N. Vorob’ev
doaj   +1 more source

Lattice of compactifications of a topological group [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2019
We show that the lattice of compactifications of a topological group $G$ is a complete lattice which is isomorphic to the lattice of all closed normal subgroups of the Bohr compactification $bG$ of $G$.
Wei He, Zhiqiang Xiao
doaj  

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