منابع مشابه
On the Isolated Points of the Surjective Spectrum of a Bounded Operator
For a bounded operator T acting on a complex Banach space, we show that if T −λ is not surjective, then λ is an isolated point of the surjective spectrum σsu(T ) of T if and only if X = H0(T−λ)+K(T−λ), where H0(T ) is the quasinilpotent part of T and K(T ) is the analytic core for T . Moreover, we study the operators for which dimK(T ) < ∞. We show that for each of these operators T , there exi...
متن کاملOn Isolated Points of the Spectrum of a Bounded Linear Operator
For a bounded linear operator A on a Banach space we characterize the isolated points in the spectrum of A , the Riesz points of A , and the poles of the resolvent of A . 1. Terminology and introduction Throughout this paper E will be an infinite-dimensional complex Banach space and A will be a bounded linear operator on E. We denote by N(A) the kernel and by A(E) the range of A. The spectrum o...
متن کاملTaylor Expansion for the Entropy Rate of Hidden Markov Chains
We study the entropy rate of a hidden Markov process, defined by observing the output of a symmetric channel whose input is a first order Markov process. Although this definition is very simple, obtaining the exact amount of entropy rate in calculation is an open problem. We introduce some probability matrices based on Markov chain's and channel's parameters. Then, we try to obtain an estimate ...
متن کاملThe Raman spectrum of isolated water clusters.
Cold water oligomers (H2O)n and (D2O)n with n = 2-5 are assigned in spontaneous Raman scattering spectra of seeded rare gas expansions for the first time. Comparison with infrared spectra provides direct experimental insights into the hydrogen bond-mediated excitonic OH oscillator coupling, which is responsible for ultrafast energy transfer between water molecules, usually suppressed by isotopi...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hokkaido Mathematical Journal
سال: 1995
ISSN: 0385-4035
DOI: 10.14492/hokmj/1380892597