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Hölder regularity for the Moore-Gibson-Thompson equation with infinite delay
(American Institute of Mathematical Sciences (AIMS), 2018-01)
We characterize the well-posedness of a third order in time equation with infinite delay in Holder spaces, solely in terms of spectral properties concerning the data of the problem. Our analysis includes the case of the ...
Complete invariant fuzzy metrics on groups
(Elsevier, 2018-01-01)
We
study some questions related to complete fuzzy metric topological groups (in the sense of Kramosil and Michael). Invariant
fuzzy metrics are characterized and we prove that if (G, M, ∗) is a fuzzy metric group such ...
A dichotomy property for locally compact groups
(Elsevier, 2018-08)
We extend to metrizable locally compact groups Rosenthal's theorem describing those Banach spaces containing no copy of l1. For that purpose, we transfer to general locally compact groups the notion of interpolation (Io) ...
Order of products of elements in finite groups
(WileyLondon Mathematical Society, 2018-10)
If G is a finite group, p is a prime, and x∈G, it is an interesting problem to place x in a convenient small (normal) subgroup of G, assuming some knowledge of the order of the products xy, for certain p‐elements y of G.
Phase portraits of Abel quadratic differential systems of the second kind
(Taylor & Francis, 2018)
We provide normal forms and the global phase portraits on the Poincaré
disk of some Abel quadratic differential equations of the second kind. Moreover, we also
provide the bifurcation diagrams for these global phase portraits.
Interpolation sets in spaces of continuous metric-valued functions
(Elsevier, 2018-10)
Let X and K be a Cech-complete topological group and a compact group, ˇ
respectively. We prove that if G is a non-equicontinuous subset of CHom(X; K), the set
of all continuous homomorphisms of X into K, then there is a ...
Convergence regions for the Chebyshev–Halley family
(Elsevier, 2018-03)
In this paper we study the dynamical behavior of the Chebyshev–Halley methods on the family of degree n polynomials . We prove that, despite increasing the degree, it is still possible to draw the parameter space by using ...
A general formula for the Magnus expansion in terms of iterated integrals of right-nested commutators
(IOP, 2018-03)
We present a general expression for any term of the Magnus series as an iterated integral of a linear combination of independent right-nested commutators with given coefficients. The relation with the Malvenuto–Reutenauer ...
Quasi-cyclic constructions of quantum codes
(Elsevier, 2018-07)
We give sufficient conditions for self-orthogonality with respect to symplec-
tic, Euclidean and Hermitian inner products of a wide family of quasi-cyclic codes of index
two. We provide lower bounds for the symplectic ...
Completeness, metrizability and compactness in spaces of fuzzy-number-valued functions
(Elsevier, 2018-05-15)
Fuzzy-number-valued functions, that is, functions defined on a topological space taking values in the space of fuzzy numbers, play a central role in the development of Fuzzy Analysis. In this paper we study completeness, ...