[Turkmath:7472] FGC-Yüksek Yapılar Semineri::Bogdan Simeonov::28.04.2026::saat 19:00

[kazimilhan.ikeda]

Değerli Matematikçiler,

28 Nisan 2026 tarihi için planlanmış Feza Gürsey Fizik ve Matematik 
UygAr Merkezi Yüksek Yapılar Semineri detayları aşağıda yer almaktadır.

Saygılarımla,
İlhan İkeda

-------- Original Message --------

Dear friends,

On 28.04.2026 Tuesday, at 19:00 Istanbul local time (17:00 London local 
time), Bogdan Simeonov, from the Imperial College London, will be the 
speaker of our FGC Higher Structures Seminars.

The details of Bogdan's seminar talk are as follows:

Speaker: Bogdan Simeonov (Imperial College London)
Date: April 28, 2026
Time: 19:00 Istanbul local time (17:00 London local time)

Title: Homological mirror symmetry for orbifold log Calabi-Yau surfaces

Abstract:
A guiding expectation in mirror symmetry is that adding a compactifying 
divisor to an open Calabi–Yau variety corresponds to equipping its 
mirror with a Landau–Ginzburg potential. For smooth projective rational 
surfaces Y, this was confirmed by Hacking and Keating (building on 
foundational work of Gross–Hacking–Keel–Kontsevich) who proved 
homological mirror symmetry by identifying the derived category of Y 
with the Fukaya–Seidel category of vanishing cycles of a mirror 
Landau–Ginzburg model. In this talk, I will describe how to extend this 
picture to surfaces with isolated cyclic quotient singularities. To an 
anticanonical compactification X (viewed as a stack) of a smooth open 
Calabi–Yau surface whose boundary divisor is a cycle of weighted 
projective lines, I will construct a mirror Lefschetz fibration and 
outline the proof of homological mirror symmetry. I will further explain 
how this fibration arises via a sequence of Lefschetz stabilizations 
from the Hacking–Keating mirror of the minimal resolution Y of the 
coarse space of X. As an application, I give a symplectic interpretation 
of the fully faithful embedding Db(Y)→Db(X) from the special McKay 
correspondence of Ishii and Ueda.

Zoom link details:
Feza Gursey Center for Physics and Mathematics is inviting you to a 
scheduled Zoom meeting.
Topic: Higher Structures Seminars

Time: This is a recurring meeting Meet anytime (so Zoom link will be 
active at 18:45 Istanbul LT/16:45 London LT on)

Join Zoom Meeting: 
https://ozyegin-edu-tr.zoom.us/j/93563904955?pwd=9xh1VJjxaaiShD7SmI0YLs3XemY1hQ.1

Meeting ID: 935 6390 4955
Passcode: 699568

Best regards,
Ilhan

Organized by Feza Gürsey Center for Physics and Mathematics.
Zoom link is kindly provided by Özyeğin University.

Feza Gürsey Fizik ve Matematik UygAr Merkezi tarafından 
düzenlenmektedir.
Zoom bağlantısı Özyeğin Üniversitesi tarafından sağlanmaktadır
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