On The Symmetric Quaternionic Banach Algebras, I (Geljfand Theory)
The Spectrum Of Line Graphs Of Some Infinite Graphs
On operators with the same local spectra
Let be the algebra of all bounded linear operators in a complex Banach space . We consider operators satisfying the relation for any vector , where denotes the local spectrum of at the point . We say then that and have the same local spectra. We prove that then, under some conditions, is a quasinilpotent operator, that is as . Without these conditions, we describe the operators with the same local spectra only in some particular cases.
Graphs whose energy does not exceed 3
On Spectra of Infinite Graphs
Graphs with the Reduced Spectrum in the Unit Interval
Maximal Canonical Graphs with Three Negative Eigenvalues
Finiteness of spectra of graphs obtained by some operations on infinite graphs.
On the automorphism group of an infinite graph.
Sous-groupes distingues du groupe unitaire et du groupe général linéaire d'un espace de Hilbert quaternionien.
A property of canonical graphs.
On the numbers of positive and negative eigenvalues of a graph.
Representation theorems for sequences of the classes and .
A theorem of Galambos-Bojanić-Seneta type.
The strong asymptotic equivalence and the generalized inverse.
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