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Ponencia
PURL: A new polynomial-time solvable class of satisfiability
(Universidad de Cádiz, 2007)
In this work a new polynomial-time solvable class of satisfiability PURL ( PropUnit RemoveLiterals) is presented, based on natural extensions of the known con cepts of the l-neighbourhood of a clause and removable literal. ...
Artículo
Interpolation with a parameter function of Lp-spaces with respect to a vector measure on a δ-ring
(Tusi Mathematical Research Group, 2016)
Let ν be a σ-finite Banach-space-valued measure defined on a δ-ring. We find a wide class of measures ν for which interpolation with a parameter function of couples of Banach lattices of p-integrable and weakly p-integrable ...
Artículo
An exact algebraic ϵ-constraint method for bi-objective linear integer programming based on test sets
(Elsevier, 2020)
A new exact algorithm for bi-objective linear integer problems is presented, based on the classic - constraint method and algebraic test sets for single-objective linear integer problems. Our method pro- vides the complete ...
Artículo
On the Ramsey numbers for stars versus complete graphs
(Elsevier, 2010)
For graphs G1, . . . , Gs, the multicolor Ramsey number R(G1, . . . , Gs) is the smallest integer r such that if we give any edge col-oring of the complete graph on r vertices with s colors then there exists a monochromatic copy ...
Artículo
On the singular braid monoid of an orientable surface
(American Mathematical Society, 2004)
In this paper we show that the singular braid monoid of an orientable surface can be embedded in a group. The proof is purely topological, making no use of the monoid presentation.
Artículo
Planning Rapid Transit Networks
(Elsevier, 2011)
Rapid transit construction projects are major endeavours that require long-term planning by several players, including politicians, urban planners, engineers, management consultants, and citizen groups. Traditionally, ...
Artículo
Abelian groups gradings on null-filiform and one-parametric filiform Leibniz algebras
(Cornell University, 2021)
We classify, up to equivalences, all abelian groups gradings on null-filiform and oneparametric filiform Leibniz algebras. Any grading on a null-filiform Leibniz algebra is toral but there are non-toral gradings on ...
Artículo
A class of nilpotent lie algebras
(Taylor and Francis, 2000)
A p-filiform Lie algebra g is a nilpotent Lie algebra for which Goze’s invariant is (n–p,1,…,1). These Lie algebras are well known for P ≥ n-4n = dim(g). In this paper we describe the p-filiform Lie algebras, for p = n-5 ...
Artículo
Naturally graded quasi-filiform Leibniz algebras
(Elsevier, 2009)
The classification of naturally graded quasi-filiform Lie algebras is known; they have the characteristic sequence .n - 2; 1; 1/ where n is the dimension of the algebra. In the present paper we deal with naturally graded ...
Artículo
On Skew E–W Matrices
(Wiley, 2016)
An E–W matrix M is a ( − 1, 1)-matrix of order urn:x-wiley:10638539:media:jcd21519:jcd21519-math-0001, where t is a positive integer, satisfying that the absolute value of its determinant attains Ehlich–Wojtas' bound. M ...