


Analysis and PDE seminar
Monday, 8th Jan, 4 pm—5 pm
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Venue: Ramanujan Hall
Host: Saikat Majumdar
Speaker: Anusha Krishan, University of Münster
Title: Toral symmetries of homogeneous ancient Ricci flows
Abstract: Ricci flow solutions that are defined for all negative times, are called ancient, and have a special significance since they arise as blowup limits at singularities of the flow. Several instances in the literature suggest that ancient solutions to the Ricci flow have a higher degree of symmetry than initially assumed. In recent work (joint with F. Pediconi and S. Sbiti), we show that under certain assumptions, collapsed homogeneous ancient solutions to the Ricci flow have additional toral symmetry.
Algebraic Groups seminar
Tuesday, 9 January 2024, 4 pm
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Venue: Ramanujan Hall
Host: Shripad M. Garge
Speaker: Shripad M. Garge
Affiliation: IIT Bombay
Title: Topological properties of morphisms
Abstract: We are following T. A. Springer's book on Linear Algebraic Groups, Chapter 5. In this lecture, we will study dominant morphisms between irreducible varieties.
Commutative Algebra Seminar
Tuesday, 9 Jan 2023, 4 pm5:30 pm
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Host: Tony Puthenpurakal
Venue: Room 215
Speaker: Tony J. Puthenpurakal
Affiliation: IIT Bombay
Title: Modules over Weyl algebras with application to local cohomology modules over polynomial rings
Abstract. Let K be a field of characteristic zero. We study finitely generated modules over the Weyl algebra A_n(K). We give application to local cohomology modules of K[X_1,...., X_n].
Algebraic Groups seminar
Friday, 12 January, 4.005.15
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Venue: Room 105
Host: Dipendra Prasad
Speakers: Dibyendu Biswas, Chayan. Karmakar and Mohammed Saad
Abstract: We will discuss a variety of topics in Algebraic groups through reading some of the papers that have become classics in the subject. The first few seminars will be on the paper by ROBERT STEINBERG, Regular elements of semisimple algebraic groups Publications mathématiques de l’I.H.É.S., tome 25 (1965), p. 4980