[Turkmath:927] İstanbul Üniversitesi Matematik Seminer

Tue Dec 29 16:18:09 UTC 2015

Değerli Üyeler, 

Tübitak desteğiyle bölümümüzde bulunan Kanada, Saskatchewan Üniversitesi 
öğretim üyelerinden  Ebrahim Samei 

5 Ocak 2015 tarihinde  saat  14:00'te 

İ.Ü, Matematik Bölümü seminer salonunda  aşağıda ayrıntıları verilen Analiz seminerini 
verecektir. 

İlgilenen tüm araştırmacılar davetlidir. 

Bilgilerinize. 
Serap Öztop 

Title: Reflexivity and hyperreflexivity of bounded $n$-cocycle spaces 
and application to convolution 
operators 

Abstract: We introduced the concept of strong property $\mathbb{B}$ with 
a constant for Banach algebras and, by applying certain analysis on the 
Fourier algebra of a unit circle, we show that all C$^*$-algebras and 
group algebras have the strong property $\mathbb{B}$ with a constant 
given by $288\pi(1+\sqrt{2})$. We then use this result to find a 
concrete upper bound for the hyperreflexivity constant of certain spaces 
of bounded $n$-cocycles from $A$ into $X$, where $A$ is a C$^*$-algebra 
or the group algebra of a group with an open subgroup of polynomial 
growth and $X$ is a Banach $A$-bimodule. As another application, we show 
that for a locally compact amenable group $G$ and $1<p<\infty$, the 
space $CV_P(G)$ of convolution operators on $L^p(G)$ are hyperreflexive 
with a constant given by $288\pi(1+\sqrt{2})$. This is the 
generalization of a well-known result of E. Christiensen for $p=2$. 

This is a joint work with Jafar Soltani Farsani. 

----- Orijinal Mesaj -----

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Gönderilenler: 29 Aralık Salı 2015 14:00:02 
Konu: Turkmath Digest, Vol 15, Issue 55 

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Today's Topics: 

   1. [Turkmath:924] Correction: Talk by Cigdem Gencer at 14:00, 
      Tuesday,        December 29, MSGSU (Mohan Ravichandran) 

---------------------------------------------------------------------- 

Message: 1 
Date: Mon, 28 Dec 2015 21:00:18 +0200 
From: Mohan Ravichandran <mohan.ravichandran at gmail.com> 
To: turkmath at listweb.bilkent.edu.tr, msgsu-mat-ogruye at googlegroups.com 
Subject: [Turkmath:924] Correction: Talk by Cigdem Gencer at 14:00, 
        Tuesday,        December 29, MSGSU 
Message-ID: 
        <CAMc=tcdZ_heDy0xm6L81mrRtCXBsbem6AafutuON4G86VaPzdQ at mail.gmail.com> 
Content-Type: text/plain; charset="utf-8" 

Dear All, 

   In a previous email, the timing had been wrongly listed as 16:00. 
The talk will be at 14:00. 

The title and abstract are attached, again, for your convenience. 

Best, 
Mohan 
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