<div dir="ltr"><div style="font-size:12.8px"><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif">Merhabalar</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b><br></b></font></div><div style="font-size:12.8px"><div style="font-size:13px"><font face="arial, helvetica, sans-serif">İstanbul Üniversitesi Matematik Bölümü genel seminerinde İstanbul Üniversitesi'nden Erhan Çalışkan "</font>s-Numbers Sequences for Homogeneous Polynomials<span style="font-family:arial,helvetica,sans-serif">" başlıklı bir konuşma verecektir. Konuşma Türkçe olacaktır ve detayları aşağıdaki gibidir. İlgilenen herkesi bekleriz.</span></div><div style="font-size:13px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:13px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:13px"><font face="arial, helvetica, sans-serif">Dear All,</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><span style="font-size:13px;text-align:center">Erhan Çalışkan from İstanbul University is going to give a talk entitled "</span></font><span style="font-size:12.8px">s-Numbers Sequences for Homogeneous Polynomials</span><span style="text-align:center;font-family:arial,helvetica,sans-serif;font-size:12.8px">" at the Istanbul University Department of Mathematics Colloquium. The talk will be in Turkish and its details are given below. All interested are welcome.</span></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><span style="text-align:center"><br></span></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><span style="text-align:center">Şükrü Yalçınkaya</span></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><span style="text-align:center">------------------------------<wbr>------------------------------<wbr>------------------------------<wbr>------------------------------<wbr>----------------</span></font></div></div></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b><br></b></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b>Konuşmacı/Speaker</b>: Erhan Çalışkan</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b>Başlık/Title</b>: </font><span style="font-size:small">s-Numbers Sequences for Homogeneous Polynomials</span></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b>Özet/Abstract: </b></font><span style="font-size:small">We extend the well-known theory of s-numbers of linear operators to
homogeneous polynomials defined between Banach spaces. Approximation,
Kolmogorov and Gelfand numbers of polynomials are introduced and some
well-known results of the linear and multilinear settings are obtained for homogeneous
polynomials. We extend the measure of non compactness notion
to the polynomial setting, and then characterize compactness of homogeneous
polynomials in terms of these numbers. As an application, we study
diagonal polynomials between sequence spaces. </span></div><div style="font-size:12.8px"><span style="font-size:small"><br></span></div><div style="font-size:12.8px"><span style="font-size:small">This is a part of the paper: ”Compactness and s-Numbers for polynomials” by
E. Çalışkan and P. Rueda to appear in somewhere else.</span></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b>Yer/Place</b>: Matematik Bölümü Seminer Salonu</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><b>Tarih-Zaman/Date-Time: 23</b> Kasım 2016, 15:00</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif">İyi çalışmalar</font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div><div style="font-size:12.8px"><font face="arial, helvetica, sans-serif"><br></font></div></div>