%0 Journal Article
%A Carpintero, Carlos
%A Gutiérrez, Alexander
%A Rosas, Ennis
%A Sanabria, José
%T A note on preservation of spectra for two given operators
%J Mathematica Bohemica
%D 2020
%P 113-126
%V 145
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/MB.2019.0038-18/
%R 10.21136/MB.2019.0038-18
%G en
%F 10_21136_MB_2019_0038_18