On the spectra of elements in certain algebras of vector valued functions and sequences.
On the spectra of holomorphic function algebras
On the spectral properties of elements of the type exp(ih) in Hermitian Banach algebras
On the spectral properties of tensor products of linear operators in Banach spaces
On the spectral properties of translation operators in one-dimensional tubes
We study the spectral properties of some group of unitary operators in the Hilbert space of square Lebesgue integrable holomorphic functions on a one-dimensional tube (see formula (1)). Applying the Genchev transform ([2], [5]) we prove that this group has continuous simple spectrum (Theorem 4) and that the projection-valued measure for this group has a very explicit form (Theorem 5).
On the spectral radius in locally multiplicatively convex topological algebras
On the spectrum of a morphism of quotient Hilbert spaces.
On the spectrum of a one-parameter strongly continous representation.
On the spectrum of A(Ω) and
We study some properties of the maximal ideal space of the bounded holomorphic functions in several variables. Two examples of bounded balanced domains are introduced, both having non-trivial maximal ideals.
On the spectrum of C1b (E).
On the spectrum of inner derivations in partial Jordan triples.
On the spectrum of multipliers in Bessel potential spaces
On the spectrum of the analytic generator.
On the spectrum of the distributional kernel related to the residue.
On the spectrum of the sum of generators of a finitely generated group, II
On the splitting of twisted sums, and the three space problem for local convexity
On the stability of a generalized quadratic and quartic type functional equation in quasi-Banach spaces.
On the stability of mappings and an answer to a problem of TH.M. Rassias
On the stability of the fixed point property in spaces.
On the Stability of the Functional Quadratic on A-orthogonal Vectors