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).
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.
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.
Friday, September 5, room 358, IMI-BAS. 14:00
The research group “Theory of Atoms” will give two talks that will highlight recent advances.
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.
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.
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).
Tuesday, July 8, room 403, IMI-BAS. 14:00
The research group “Theory of Atoms” will give two talks that will highlight recent advances.
Ludmil Katzarkov(IMI-BAS)
Friday, June 6, room 403, IMI-BAS. 15:00
We will make a connection between classical minimal model program and newly introduced theory of atoms.
International Center for Mathematical Sciences
Institute of Mathematics and Informatics
Bulgarian Academy of Sciences
Acad. G. Bonchev St. bl.8
1113 Sofia, Bulgaria
Tel. +359 2 9793822
icms-office@math.bas.bg
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