3 papers
math.CA2018
Hyers-Ulam Stability of Bessel Equations
L. P. Castro, A. M. Simões
We analyse different kinds of stabilities for the Bessel equation and for the modified Bessel equation with initial conditions. Sufficient conditions are obtained in order to guara…
math.FA2005
Wiener-Hopf plus Hankel operators on the real line with unitary and sectorial symbols
G. Bogveradze, L. P. Castro
Wiener-Hopf plus Hankel operators acting between Lebesgue spaces on the real line are studied in view of their invertibility, one sided-invertibility, Fredholm, and semi-Fredholm p…
math.FA2005
Factorization theory for Wiener-Hopf plus Hankel operators with almost periodic symbols
A. P. Nolasco, L. P. Castro
A factorization theory is proposed for Wiener-Hopf plus Hankel operators with almost periodic Fourier symbols. We introduce a factorization concept for the almost periodic Fourier…