[Turkmath:7599] ODTU-Bilkent Algebraic Geometry Seminar-Zoom-588

[Ali Sinan Sertöz]

*Welcome to the 2026 Fall talks of ODTÜ-Bilkent Algebraic Geometry 
Seminars**
*
/since 2000/
**=================================================================**

This week the ODTÜ-Bilkent Algebraic Geometry Seminar 
<https://sertoz.bilkent.edu.tr/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=20261023T1540&p1=19&ah=1>
*=================================================================

*

/Devrim Erbil (1937- )
/
/
/
/
/
**Speaker: Anatoly Libgober

<https://homepages.math.uic.edu/%7Elibgober/>**
******Affiliation: /University of Illinois Chicago

/**
**Title:  Pencils of curves on algebraic surfaces with reducible fibers

**
**Abstract:**  We describe constraints on the pencils of curves having 
sufficiently many reducible members, depending on the surface and the 
numerical  classes of irreducible components. In the case of pencils of 
curves in linear systems with a small degree of the discriminant we give 
a classification of these pencils. This follows from the description of 
polarized simply connected surfaces with the degree of discriminant less 
than 13.
*Paper:* https://arxiv.org/abs/2608.06136

*Date: 23 October 2026, 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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