By Ivan G. Todorov, Lyudmila Turowska

ISBN-10: 3034805012

ISBN-13: 9783034805018

ISBN-10: 3034805020

ISBN-13: 9783034805025

This quantity includes the complaints of the convention on Operator concept and its purposes held in Gothenburg, Sweden, April 26-29, 2011. The convention used to be held in honour of Professor Victor Shulman at the get together of his sixty fifth birthday. The papers incorporated within the quantity disguise a wide number of issues, between them the speculation of operator beliefs, linear preservers, C*-algebras, invariant subspaces, non-commutative harmonic research, and quantum teams, and replicate fresh advancements in those components. The ebook includes either unique study papers and top of the range survey articles, all of that have been rigorously refereed.

**Read or Download Algebraic Methods in Functional Analysis: The Victor Shulman Anniversary Volume PDF**

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**Additional info for Algebraic Methods in Functional Analysis: The Victor Shulman Anniversary Volume**

**Sample text**

Moreover, given such an embedding ????, one can construct an embedding of ???? as a closed subalgebra of a ﬁnite, Type I von Neumann algebra. (The basic idea is as follows. If (???????? ) denotes the standard unit basis of ???? = ℓ1 , let ???????? = lin(????1 , . . 8]). This approach is somewhat indirect, and does not seem to give an explicit description of an embedding. It is therefore desirable to have an explicit construction of an embedding of ???? as a closed subalgebra of a product of matrix algebras. This can be done with the following construction, which was shown to me by M.

5. Let ???? be a locally compact abelian group. 8). Suppose that ????1 and ????2 are commuting representations of ???? on ???? and ???? is a representation of ???? on ???? such that ∥????1 (????????)∥, ∥????2 (????????)∥, ∥???? (????????)∥ = ????(∣????∣???? ) as ∣????∣ → ∞ (???? ∈ ????) for some ???? ∈ ℤ with ???? ≥ 0. If ???? ∈ ℬ(????, ???? ) is such that sp(????, ????????) ⊂ sp(????1 , ????)???? (????, ????1 ) ∪ sp(????2 , ????)???? (????, ????2 ) (???? ∈ ????), 30 J. Alaminos, J. R. Villena ???? for some 0 ≤ ????1 , ????2 < 3????+1 and some ???? ⊂ ???? compact neighbourhood of the identity in ????, then ( )( ) ???? ∑ ???? ???? ???? (????)2???? −(????1 +????2 ) ????????1 (????)????1 ????2 (????)????2 (−1)????1 +????2 ???? ???? 1 2 ????1 ,????2 =0 ( ( ) ( ) ( ) ( )) ≤ 2tan ????2 ????1 + 2tan ????2 ????2 + 4tan ????2 ????1 tan ????2 ????2 ????(????)∥????∥????3 (???? − 1) (???? ∈ ????) for ???? = 3???? + 1, where ????(????) = sup ????∈ℤ ∥????1 (????????)∥ ∥????2 (????????)∥ ∥???? (????????)∥ sup sup (???? ∈ ????).

Shulman on the occasion of his 65th birthday Abstract. We construct a singly generated subalgebra of ????(ℋ) which is nonamenable, yet is boundedly approximately contractible. The example embeds into a homogeneous von Neumann algebra. We also observe that there are singly generated, biﬂat subalgebras of ﬁnite Type I von Neumann algebras, which are not amenable (and hence are not isomorphic to C∗ -algebras). Such an example can be used to show that a certain extension property for commutative operator algebras, which is shown in [3] to follow from amenability, does not necessarily imply amenability.

### Algebraic Methods in Functional Analysis: The Victor Shulman Anniversary Volume by Ivan G. Todorov, Lyudmila Turowska

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