[Turkmath:7591] ODTU-Bilkent Algebraic Geometry Seminar-Zoom-587

[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=20261016T1540&p1=19&ah=1>
*=================================================================

*

/Devrim Erbil (1937- )
/
/
/
/
/
**Speaker: Demir Eken <https://websites.umich.edu/%7Eeken/>**
******Affiliation: /University of Michigan

/**
**Title:  Positivity, Adjoint Linear Systems, and Jet Separation

**
**Abstract:**  Positivity of line bundles allows us to construct 
morphisms and projective embeddings, and more generally global sections 
with prescribed Taylor coefficients. This raises a quantitative 
question: how much positivity is needed for global generation, very 
ampleness, or separation of higher-order jets? In this expository talk, 
I will discuss these questions for adjoint line bundles $K_X+mA$ with 
$A$ ample, starting from Fujita’s conjectures. I will also present 
global and local criteria for $k$-jet separation and the role of 
Seshadri constants in measuring local positivity.


*Date: 16 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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