ICMS Seminar and Joint Meeting with the Analysis, Geometry and Topology Seminar

The next session of the ICMS seminar will take place on Tuesday, December 2, 2025. Talks will be delivered by Roy Magen from ICMS and Liviu Ornea from the University of Bucharest, with the second talk being presented within a joint session with the seminar of the Analysis, Geometry and Topology Department. The program is as follows. ICMS Seminar and AGT Seminar Tuesday, December 2nd, room 403 IMI-BAS. 13:00 -- Roy Magen (ICMS, IMI-BAS) Flavours of homotopy theory 14:00 -- Liviu Ornea (University of Bucarest) Distinguished non-Kähler metrics on compact complex manifolds Abstract (Magen): In this talk we will consider different flavours of homotopy theory for different types of geometric contexts. First we will recall the usual definitions of the homotopy category, and equivariant [...]

2025-12-02T12:57:11+02:00Tuesday, 2 December 2025|Categories: |Tags: , |

Joint meeting of the ICMS seminar and the seminar on Mathematical Foundations of Informatics

Wednesday, November 26-th, 16:00, room 403, IMI-BAS Joint meeting of the ICMS seminar and the seminar on Mathematical Foundations of Informatics Frank Vallentin (Universität zu Köln) Least distortion Euclidean embeddings of flat tori Abstract: In the emerging field of bi-Lipschitz invariant theory, one studies embeddings of orbit spaces H/G (H a Hilbert space, G a subgroup of its automorphisms) into simpler Hilbert spaces via distance-preserving maps up to a constant factor. In this talk, I present an infinite-dimensional semidefinite program that computes least-distortion embeddings of flat tori Rn/L, where L is an n-dimensional lattice, into Hilbert spaces. Using symmetry reduction techniques, this infinite-dimensional semidefinite program reduces to an infinite-dimensional linear program. Even with this simplification, solving the program remains challenging. By combining this approach with [...]

2025-11-26T12:18:02+02:00Friday, 21 November 2025|Categories: |Tags: , |

ICMS Seminar

Tuesday, November 25-th, 13:00, room 403, IMI-BAS. Deepanshu Prasad (ICMS, IMI-BAS) An Extension of Sato-Kimura Theorem for Semi-invariant rings Abstract:  We give an analog of a result of Sato-Kimura in the context of a semi-invariant  ring for a finite dimensional algebra over an algebraically closed field K of characteristics 0. Then, we examine the case of finite dimensional hereditary algebras over K. This is joint work with Charles Paquette and David Wehlau. https://icms.bg/an-extension-of-sato-kimura-theorem-for-semi-invariant-rings-icms-seminar-talk-by-deepanshu-prasad/

2025-11-21T21:51:12+02:00Friday, 21 November 2025|Categories: |Tags: |

Joint meeting of the Seminar on Singularities and the ICMS Seminar

Joint meeting of the Seminar on Singularities and the ICMS Seminar, with a lecture by Pablo Cuadrado. The program is as follows. Tuesday, November 18, room 403, IMI-BAS. 13:00 -- Giovane Galindo (ICMS, IMI-BAS) Bundle-type sub-Riemannian structures on holonomy bundles 14:00 -- Pablo Portilla Cuadrado (Universidad Politécnica de Madrid) The medial axis of the Milnor fiber Abstract (Galindo): In this talk we present the notion of Gromov-Hausdorff distance, a novel field of study that aims to understand the topology of the moduli space of Riemannian metrics on a given manifold. We will then present new results on the subject concerning the collapse of principal bundles onto reductive homogeneous spaces. Abstract (Cuadrado): Let f(x,y) define an isolated singularity at the origin. In this talk we explore a [...]

2025-11-18T11:58:57+02:00Tuesday, 18 November 2025|Tags: , |

ICMS Seminar

ICMS Seminar Tuesday, November 4, 2025, 1:00 pm, Room 403, IMI-BAS Lecturer: Leonardo Cavenaghi (ICMS, IMI-BAS) Topic: Exotic phenomena in topology and geometry   Abstract: This talk, aimed at a general audience of mathematicians, discusses very geometric models of exotic spheres. Exotic spheres are manifolds homeomorphic to classical spheres but not diffeomorphic to them. We will outline some constructions via group actions and discuss their admissible geometries. For instance, until this day, it is not known whether an exotic sphere admits a metric of positive sectional curvature, but some do not even admit positive scalar curvature. In this talk, we also outline how one can indirectly study their geometries, aiming to gain a better understanding of their admissible geometries, for example, regarding the existence [...]

2025-10-31T15:05:26+02:00Friday, 31 October 2025|Tags: |

ICMS Seminar

The next meeting of the ICMS Seminar will be on Friday, with lectures by Alexander Stokolos and Ernesto Lupercio. ICMS Seminar Friday, June 20-th. Room 403 IMI-BAS. 15:30 - 16:30.  Alexander Stokolos (Georgia Southern University) On extremal polynomials Abstract: I will present known and new polynomials emerging from the extremal problems of geometric complex analysis. 16:45 - 17:45. Ernesto Lupercio (IMI-BAS and Cinvestav IPN México) Analysis in Loop Spaces and Genera Abstract: Analysis on loop spaces, motivated by ideas from conformal field theory, leads naturally to the construction of elliptic genera—topological invariants with deep modular and representation-theoretic properties. Мore information can be found at the seminar's website https://icms.bg/category/icms-seminar/

2025-06-16T16:32:44+03:00Monday, 16 June 2025|Categories: |Tags: |

ICMS Seminar

The ICMS Seminar will meet this Friday, June 6-th, at 14:00, with three lectures by Peter Dalakov, Lyudmil Katzarkov and Ernesto Lupercio from IMI-BAS. The schedule is the following. June 6-th. Room 403 IMI-BAS. 14:00 - 14:50.  Peter Dalakov Special Kaehler Geometry and some applications (Part II) 15:00 - 15:50.  Lyudmil Katzarkov Atoms and Minimal Model Program 16:00 - 16:50. Ernesto Lupercio Elliptic genus and applications Abstracts and more information can be found at https://icms.bg/category/icms-seminar/

2025-06-05T18:27:16+03:00Thursday, 5 June 2025|Categories: |Tags: |

ICMS Seminar

The ICMS seminar continues with a series of four lectures by Dr. Petеr Dalakov, as follows: Dates: June 13th, 2:00 pm Place: Room 403, ИМИ-БАН 14:00 – 15:30.  Peter Dalakov Special Kaehler geometry and some applications (Part IV) 16:00 – 17:00. Ernesto Lupercio Elliptic genera and the geometry of loop spaces and applications Abstracts and more information can be found at: https://icms.bg/category/icms-seminar/  

2025-06-12T15:29:06+03:00Friday, 30 May 2025|Categories: |Tags: |

ICMS Seminar

The ICMS seminar continues with a series of four lectures by Dr. Petеr Dalakov, as follows: Dates: June 3rd, 6th, 10th, 13th, 2:00 pm Place: Room 403, ИМИ-БАН Speaker: Peter Dalakov (IMI and AUBG) Topic: Special Kaehler Geometry and some applications Abstract: In this short sequence of lectures we will discuss the notion of special Kaehler structure and some of its links to complex algebraic geometry, in particular, complex Lagrangians, variations of Hodge structures and algebraic integrable systems. The sequence will conclude with examples related to various moduli spaces of Higgs bundles on curves. For more information please visit the site of the ICMS Seminar: https://icms.bg/category/icms-seminar/  

2025-05-30T14:55:36+03:00Friday, 30 May 2025|Categories: |Tags: |

ICMS Seminar

The ICMS seminar continues with a series of four lectures by Dr. Peter Dalakov, as follows: Dates: June 3rd, 6th, 10th, 13th, 2:00 pm Place: Room 403, ИМИ-БАН Speaker: Peter Dalakov (IMI and AUBG) Topic: Special Kaehler Geometry and some applications Abstract: In this short sequence of lectures we will discuss the notion of special Kaehler structure and some of its links to complex algebraic geometry, in particular, complex Lagrangians, variations of Hodge structures and algebraic integrable systems. The sequence will conclude with examples related to various moduli spaces of Higgs bundles on curves. For more information please visit the site of the ICMS Seminar: https://icms.bg/category/icms-seminar/  

2025-05-30T14:56:53+03:00Friday, 30 May 2025|Categories: |Tags: |
Go to Top