Complex Geometry Course
Intensive summer doctoral course in Complex Geometry by the Theory of Atoms group (Prof. Dr. Ludmil Katzarkov), Summer 2026 — 15 lectures, 16 July – 4 August, IMI-BAS Sofia.
2
07, 2026
24
03, 2026
ICMS & IMSA Joint Conference: Spencer Fest
For his original and insightful research that has had a profound impact on twentieth-century mathematics, and for his role as an inspiring teacher to generations of American mathematicians. Presented by President Bush at a White House Ceremony on October 18, 1989. This is an IMSA event, supported by ICMS, IMSA, the Simons Foundation, National Science Foundation and the University of Miami.
19
03, 2026
Atoms, Hodge Theory and MMP
This conference is the first in a series of conferences dedicated to the Theory of Atoms, established through the proven collaboration of the ICMS, IHES, IMSA, and UNICAMP consortium. The next conferences will take place in Miami (IMSA) and Brazil (UNICAMP, IMPA). Sponsors: Simons Foundation, National Science Foundation, University of Miami, and Bulgarian Ministry of Education and Science. The event is jointly organized by the Research Group on Theory of Atoms, hosted at the International Centre for Mathematical Sciences (ICMS-Sofia) at the Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, and the Institute for the Mathematical Sciences of the Americas (IMSA) at the University of Miami.
3
11, 2025
ToA Research Group Seminar, talk by Roy Magen (ICMS, IMI-BAS) – A closer look at the definition of atoms and functoriality
November 5, 2025, 16:30 Sofia time, Room 403, IMI-BAS and online via Zoom..
A closer look at the definition of atoms and functoriality - seminar talk by Roy Magen (ICMS, IMI-BAS).
31
10, 2025
ToA Research Group Seminar, talk by Prof. Ludmil Katzarkov: Recent Advancements in the Theory of Atoms
November 4, 2025, 3:00 PM, Room 403, IMI-BAS and online via Zoom..
Seminar by Prof. Ludmil Katzarkov on Recent Advancements in the Theory of Atoms.
16
09, 2025
Theory of Atoms via Examples, Minicourse
September - October 2025
The research group “Theory of Atoms”'s Leonardo Kavenaghi will give series of lectures
The Theory of Atoms is a recent formalism introduced by Katzarkov, Kontsevich, Pantev, and Yu, which aims to integrate classical Hodge theory with symplectic geometry, seeking applications in birational geometry.
To properly understand it, we must gather concepts from many areas of knowledge, ranging from Gromov-Witten theory and enumerative algebraic geometry to classical and noncommutative Hodge theory. This series is designed to be an example-driven introduction, providing the essential background needed to understand this new theory.
1
09, 2025
Theory of Atoms, ICMS Research Group Seminar 05.09.2025
Friday, September 5, room 358, IMI-BAS. 14:00
The research group “Theory of Atoms” will give two talks that will highlight recent advances.
8
08, 2025
A Year of Collaboration and Discovery in the Theory of Atoms Group
On August 7, 2025, the Conference Celebrating the Consortium IMSAC was officially opened at the Institute of Mathematics and Informatics (IMI–BAS) in Sofia. The event honors the long-standing collaboration among leading mathematical institutes across the USA, Latin America, Asia, and Europe, united in the Institute of the Mathematical Sciences of the Americas Consortium (IMSAC). At the opening, Prof. Julian Revalski, Director of the International Center for Mathematical Sciences – Sofia (ICMS-Sofia), greeted the participants and emphasized the importance of international cooperation in advancing contemporary mathematics. Prof. Peter Boyvalenkov, Director of IMI-BAS, welcomed the guests to the institute and wished them a fruitful and inspiring conference. The opening of the conference also sets the tone for a vibrant month of mathematical activity inBulgaria and coincides with an important milestone — the end of the first year of the activities of the research group Theory of Atoms, led by Prof. Ludmil Katzarkov.
16
07, 2025
Higher genus GW-invariants of Calabi-Yau 3-folds, ToA seminar talk by Y. Ruan
Y. Ruan (IASM, Hangzhou-China)
Tuesday, July 22, room 403, IMI-BAS. 15:00
The computation of higher genus GW-invariants of Compact Calabi-Yau 3-fold is one of the most difficult problems in geometry and physics. During last decade, there has been tremendous progress on the problem. I will survey these progress in the talk.
14
07, 2025
Fundamentals on (G-equivariant) atoms, ToA seminar talk by Leonardo Cavenaghi
Leonardo Cavenaghi (IMI-BAS/ICMS)
Tuesday, July 22, room 403, IMI-BAS. 14:00
In this talk, we introduce the concept of atoms recently introduced by Katzarkov-Kontsevich-Pantev-Yu. Built from Gromov-Witten theory, they have been proven to be useful in understanding questions in birational geometry by examining the behavior of quantum cohomology under blowup (this is a theorem of H. Iritani, following a conjecture of M. Kontsevich).
