An essential spectra mapping theorem

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A note on spectral mapping theorem

This paper aims to present the well-known spectral mapping theorem for multi-variable functions.

متن کامل

An Angular Open Mapping Theorem

The purpose of this paper is to provide a modified open mapping theorem, which also applies to maps which are not open, but whose intersection with a convex cone is relatively open. We give a constructive proof, which for the special maps considered here may be seen as an alternative to the indirect proof of Frankowska’s more general open mapping principle. Open mapping theorems are of utmost i...

متن کامل

An Open Mapping Theorem for Young Measures

Ditor and Eifler consider the open mapping theorem for the probability spaces. Here we attempt to generalize the theorem to the spaces of Young measures.

متن کامل

An Open Mapping Approach to Hurwitz's Theorem

It is a consequence of known results^) that any compact light open mapping / of one two-dimensional manifold A into another one B has a definite finite degree k(f), that is, there is an integer k(f) such that for each y£j(A),f~l(y) contains exactly k(f) points provided the points of/_l(y) are counted with multiplicity in an obvious manner. Further, considered as a function on the subset O of co...

متن کامل

Weyl Spectra and Weyl’s Theorem

“Weyl’s theorem” for an operator on a Hilbert space is a statement that the complement in the spectrum of the “Weyl spectrum” coincides with the isolated eigenvalues of finite multiplicity. In this paper we consider how Weyl’s theorem survives for polynomials of operators and under quasinilpotent or compact perturbations. First, we show that if T is reduced by each of its finite-dimensional eig...

متن کامل

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: Journal of Mathematical Analysis and Applications

سال: 1976

ISSN: 0022-247X

DOI: 10.1016/0022-247x(76)90007-x