Modules with norms which take values in a C*-algebra

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود 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

Modules for which every non-cosingular submodule is a summand

‎A module $M$ is lifting if and only if $M$ is amply supplemented and‎ ‎every coclosed submodule of $M$ is a direct summand‎. ‎In this paper‎, ‎we are‎ ‎interested in a generalization of lifting modules by removing the condition‎"‎amply supplemented‎" ‎and just focus on modules such that every non-cosingular‎ ‎submodule of them is a summand‎. ‎We call these modules NS‎. ‎We investigate some gen...

متن کامل

A Stably Contractible C*-algebra Which Is Not Contractible

We exhibit a separable commutative C*-algebra A such that A⊗K is homotopy equivalent to zero, without Mn(A) being so for any n ≥ 1.

متن کامل

A Nonseparable Amenable Operator Algebra Which Is Not Isomorphic to a C∗-algebra

It has been a longstanding problem whether every amenable operator algebra is isomorphic to a (necessarily nuclear) C∗-algebra. In this note, we give a nonseparable counterexample. The existence of a separable counterexample remains an open problem.

متن کامل

Norms and Values

The purpose of the present paper is to investigate to what extent norm predicates (expressed with words such as "ought", "permitted' and "wrong") can be defined in terms of value predicates (expressed with words such as "good", "bad", and "better"). Not even those words of naturallanguage that are paradigmatically logical (such as "not", "or", and "all") correspond exactly to symbols or express...

متن کامل

Stability of a Bi-Additive Functional Equation in Banach Modules Over a C -Algebra

In 1940, Ulam proposed the stability problem see 1 . Let G1 be a group, and let G2 be a metric group with the metric d ·, · . Given ε > 0, does there exist a δ > 0 such that if a mapping h : G1 → G2 satisfies the inequality d h xy , h x h y < δ for all x, y ∈ G1 then there is a homomorphism H : G1 → G2 with d h x ,H x < ε for all x ∈ G1? In 1941, this problem was solved by Hyers 2 in the case o...

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: Pacific Journal of Mathematics

سال: 1998

ISSN: 0030-8730

DOI: 10.2140/pjm.1998.185.163