4 citations · 7 across the 4 of their papers we have counts for
4 papers
A characterisation of Euclidean normed planes via bisectors
Javier Cabello Sánchez, Adrián Gordillo-Merino
Our main result states that whenever we have a non-Euclidean norm on a two-dimensional vector space , there exists some such that for every ,…
TAC Method for Fitting Exponential Autoregressive Models and Others: Applications in Economy and Finance
Javier Cabello Sánchez, Juan Antonio Fernández Torvisco, Mariano R. Arias
There are a couple of purposes in this paper: to study a problem of approximation with exponential functions and to show its relevance for the economic science. We present results…
A natural correspondence between quasiconcave functions and fuzzy norms
Javier Cabello Sánchez, Daniel Morales González
In this note we show that the usual notion of fuzzy norm defined on a linear space is equivalent to that of quasiconcave function, in the sense that every fuzzy norm $N:X\times\mat…
Chebyshev approximation of exponential data
Mariano Rodríguez-Arias Fernández, Javier Cabello Sánchez, Juan Antonio Fernández Torvisco
In this paper we present an algorithm to fit data via exponentials when the error is measured using the max-norm. We prove the necesssary results to show that the algorithm will co…