1 citations · 1 across the 3 of their papers we have counts for
3 papers
math.FA2018
On the structure of the set of algebraic elements in a Banach algebra and their liftings
E. Makai, J. Zemánek
We generalize earlier results about connected components of idempotents in Banach algebras, due to B. Szőkefalvi Nagy, Y. Kato, S. Maeda, Z. V. Kovarik, J. Zemánek, J. Esterle. Let…
math.FA2014★ 1 cited
Local and global liftings of analytic families of idempotents in Banach algebras
Bernard Aupetit, Endre Makai, Mostafa Mbekhta +1
Generalizing results of our earlier paper, we investigate the following question. Let be an analytic family of surjective homomorphisms between two Banach algebras…
math.SP2012
Microspectral analysis of quasinilpotent operators
Jarmo Malinen, Olavi Nevanlinna, Jaroslav Zemánek
We develop a microspectral theory for quasinilpotent linear operators (i.e., those with $σ(Q) = \{0}$) in a Banach space. When such is not compact, normal, or nilpotent, th…