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Mostrando ítems 91-100 de 118
Artículo
Quasi-orthogonal cocycles, optimal sequences and a conjecture of Littlewood
(Springer, 2020)
A quasi-orthogonal cocycle, defined over a group of order congruent to 2 modulo 4, is naturally analogous to an orthogonal cocycle (i.e., one defined over a group of order divisible by 4, and whose display matrix is ...
Artículo
Butson full propelinear codes
(Cornell University, 2020)
In this paper we study Butson Hadamard matrices, and codes over finite rings coming from these matrices in logarithmic form, called BH-codes. We introduce a new morphism of Butson Hadamard matrices through a generalized ...
Artículo
Local Superderivations on Solvable Lie and Leibniz Superalgebras
(Springer, 2023-01-21)
Throughout this paper, we show on one hand, that there are nilpotent and solvable Lie superalgebras with infinitely many local superderivations which are not standard superderivations. On the other hand, we show that every ...
Artículo
Strong Euler well-composedness
(Springer, 2021)
In this paper, we define a new flavour of well-composedness, called strong Euler well composedness. In the general setting of regular cell complexes, a regular cell complex of dimension n is strongly Euler well-composed ...
Artículo
Global structural stability and the role of cooperation in mutualistic systems
(Public Library of Science (Plos), 2022)
Dynamical systems on graphs allow to describe multiple phenomena from different areas of Science. In particular, many complex systems in Ecology are studied by this approach. In this paper we analize the mathematical ...
Artículo
On the number of B-flows of a graph
(Elsevier, 2014)
We exhibit explicit constructions of contractors for the graph parameter counting the number of B-flows of a graph, where B is a subset of a finite Abelian group closed under inverses. These constructions are of great ...
Artículo
Generating families of surface triangulations. The case of punctured surfaces with inner degree at least 4
(2015)
We present two versions of a method for generating all triangulations of any punctured surface in each of these two families: (1) triangulations with inner vertices of degree ≥ 4 and boundary vertices of degree ≥ 3 and (2) ...
Artículo
The maximal determinant of cocyclic (−1, 1)-matrices over D2t
(Elsevier, 2012)
Cocyclic construction has been successfully used for Hadamard matrices of order n. These -matrices satisfy that and give the solution to the maximal determinant problem when or a multiple of 4. In this paper, we approach ...
Artículo
Sex Differences in the Gut Microbiota as Potential Determinants of Gender Predisposition to Disease
(Wiley, 2019)
Scope: Dysbiosis of gut microbiota is involved in metabolic syndrome (MetS) development, which has a different incidence between men (M) and women (W). The differences in gut microbiota in MetS patients are explored ...
Artículo
Circulating miRNAs as predictive biomarkers of type 2 diabetes mellitus development in coronary heart disease patients fromt he CORDIOPREV study
(American Society of Gene and Cell Therapy, 2018-09)
Circulating microRNAs (miRNAs) have been proposed as type 2 diabetes biomarkers, and they may be a more sensitive way to predict development of the disease than the currently used tools. Our aim was to identify whether ...