[Turkmath:7330] ODTU-Bilkent Algebraic Geometry Seminar-Zoom-573

[Ali Sinan Sertöz]

*Welcome to the 2025 Fall talks of ODTÜ-Bilkent Algebraic Geometry 
Seminars**
*
/since 2000/
**=================================================================**

This week the ODTÜ-Bilkent Algebraic Geometry Seminar 
<http://www.bilkent.edu.tr/~sertoz/agseminar.htm>  is *online*

/This talk will begin at _*15:40*__ (GMT+3)_/
Please check your time difference between Ankara and your city here 
<https://www.timeanddate.com/worldclock/fixedtime.html?msg=ODT%C3%9C-Bilkent+Algebraic+Geometry+Seminar&iso=20251114T1540&p1=19&ah=1>
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*

/Gustave Boulanger (1824-1888)
/
/
/
/
/
**Speaker: Slawomir Rams 
<https://im.uj.edu.pl/en/instytut/pracownik?id=170>**
******Affiliation: /Jagiellonian

/**
**Title: **Maximal configurations of rational curves  on K3-surfaces of 
high degrees

**
**Abstract: **One of unexpected consequences of the orbibundle 
Miyaoka-Yau-Sakai  inequality is a bound  on the maximal number of 
rational degree-d curves on smooth complex  K3-surfaces of given degree 
obtained by Miyaoka in 2009. After recalling the necessary notions,  in 
my talk I will present various results concerning  the question whether 
the above bound is sharp for  rational (resp.  smooth rational) curves 
on K3-surfaces  of high degree.

Based on joint work with M. Schuett (Hannover) and  A. Degtyarev (Ankara).

*Date: 14 November 2025, Friday*
*Time: 15:40 /(GMT+3)/*
*Place: **Zoom*

    /*Participants who have registered will receive the Zoom link via
    email one day before the seminar.*/

    /*If you registered for a previous talk in this series, there's no
    need to register again—you'll automatically receive the link for
    this session.*/

    /*If you haven't registered yet, please contact
    sertoz at bilkent.edu.tr to be added to the mailing list.*/

You are most cordially invited to attend.

Ali Sinan Sertöz

*/*/This seminar series is organized by a joint team from ODTÜ and Bilkent

Alexander Degtyarev (Bilkent)
Ali Sinan Sertöz (Bilkent) contact person
Ali Ulaş Özgür Kişisel (ODTÜ)
Yıldıray Ozan (ODTÜ)
/*/*

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Ali Sinan Sertöz
Bilkent University, Department of Mathematics, 06800 Ankara, Türkiye
Office: (90)-(312) - 290 1490
Department: (90)-(312) - 266 4377
e-mail:sertoz at bilkent.edu.tr <mailto:sertoz at bilkent.edu.tr> 
Web:sertoz.bilkent.edu.tr <http://sertoz.bilkent.edu.tr> 
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