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The Constant of Interpolation in Bloch Type Spaces
(Springer, 2023-09)
It is known that there exists a constant 0 < Δ1 < 1 such
that any Δ1-separated sequence for the pseudohyperbolic distance in
the open unit disk D of C is interpolating for the classical Bloch space
B. We will prove that ...
Best Approximation Results for Fuzzy-Number-Valued Continuous Functions
(MDPI, 2023-02)
In this paper, we study the best approximation of a fixed fuzzy-number-valued continuous function to a subset of fuzzy-number-valued continuous functions. We also introduce a method to measure the distance between a ...
Continuous Selections and Extremally Disconnected Spaces
(MDPI, 2023)
This paper deals with extremally disconnected spaces and extremally disconnected Pspaces. A space X is said to be extremally disconnected if, for every open subset V of X, the closure
of V in X is also an open set. P-spaces ...
A characterization of a local vector valued Bollobás Theorem
(Springer Nature, 2021-07-30)
In this paper, we are interested in giving two characterizations for the so-called property Lo,o, a local vector valued Bollobás type theorem. We say that (X, Y) has this property whenever given ε>0 and an operador T:X→Y, ...
Sampling Almost Periodic and Related Functions
(Springer, 2020-10)
We consider certain finite sets of circle-valued functions defined on intervals of real numbers and estimate how large the intervals must be for the values of these functions to be uniformly distributed in an approximate ...
Data on CO2, temperature and air humidity records in Spanish classrooms during the reopening of schools in the COVID-19 pandemic
(Elsevier, 2021-10-17)
In order to reduce the advance of the pandemic produced by COVID-19, many actions and restrictions have been applied and the field of education has been no exception. In Spain, during the academic year 2020–2021, face-to-face ...
On the Algebras VN(H) and VN(H)(*) of an Ultraspherical Hypergroup H
(Cambridge University PressAustralian Mathematical Society, 2022-12-12)
Let H be an ultraspherical hypergroup and let A(H)
be the Fourier algebra associated with H.
In this paper, we study the dual and the double dual of A(H).
We prove among other things that the subspace of all ...
Endograph Metric and a Version of the Arzelà–Ascoli Theorem for Fuzzy Sets
(MDPI, 2023)
In this paper, we provide several Arzelà–Ascoli-type results on the space of all continuous functions from a Tychonoff space X into the fuzzy sets of Rn
, (FUSCB(Rn),Hend)
, which are upper semi-continuous and have bounded ...
On the basins of attraction of a one-dimensional family of root finding algorithms: from Newton to Traub
(Springer, 2023)
In this paper we study the dynamics of damped Traub’s methods Tδ when applied to polynomials. The family of damped Traub’s methods consists of root finding algorithms which
contain both Newton’s (δ = 0) and Traub’s method ...
Archetypal Curves in the Shape and Size Space: Discovering the Salient Features of Curved Big Data by Representative Extremes
(Springer, 2023)
Curves are complex data. Tools for visualizing, exploring, and discovering the structure
of a data set of curves are valuable. In this paper, we propose a scalable methodology to
solve this challenge. On the one hand, ...