The purpose of this paper is to introduce a harmonic functional calculus in order to generalize some extended versions of theorems of von Neumann, Heinz and Ky Fan.
@article{urn:eudml:doc:41318,
title = {Harmonic functions operating in Hermitian Banach algebras.},
journal = {Publicacions Matem\`atiques},
volume = {41},
year = {1997},
pages = {403-409},
mrnumber = {MR1485491},
zbl = {0992.46039},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41318}
}
El Kinani, Abdellah. Harmonic functions operating in Hermitian Banach algebras.. Publicacions Matemàtiques, Tome 41 (1997) pp. 403-409. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41318/