[Turkmath:7302] ODTU-Bilkent Algebraic Geometry Seminar-Zoom-569

[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=20251017T1540&p1=19&ah=1>
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*

/Jean-Leon Gerome (1824-1904)
/
/
/
/
/
**Speaker: Bayram Tekin**
******Affiliation://**/*Bilkent*/
**/
/**
**Title: A rank-4 tensor Riemann would have loved plus spinor-techniques 
in differential geometry
**
**
**Abstract: **I would like to discuss two topics that have proved very 
useful in the parts of differential geometry used in General Relativity 
and other theories of gravity. The first one is the introduction of a 
divergence-free rank 4 tensor which was hiding in plain sight up until 
our paper ( Phys. Rev. D 99 (2019) 4, 044026 
<https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.044026>). The 
second topic will include formulating differential geometry in terms of 
Weyl spinors which are fundamental representations of SL(2,C).**
**

*Date: 17 October 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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