Past Events

Date/Time: Thursday, October 24, 2019 - 11:35 to 12:35
Venue: SMS Seminar Room
Speaker: Suratno Basu, IMSc Chennai
Title: Degeneration of intermediate Jacobians and the Torelli type theorems
Let $X$ be a smooth, irreducible, projective curve of genus $g\geq 2$ defined over the field of complex numbers. The Jacobian of $X$ is defined as the ``moduli space'' of rank $1$, degree $0$ line bundles. This variety has close relationship with $X$. Namely, Torelli showed...
Date/Time: Thursday, October 17, 2019 - 11:30 to 12:30
Venue: SMS seminar room
Speaker: Dr. Jagannath Bhanja, Indian Institute of Technology Roorkee
Title: Direct and inverse problems for certain sumsets in additive number theory
Date/Time: Thursday, September 19, 2019 - 15:30 to 16:30
Venue: Seminar Room, School of Mathematical Sciences
Speaker: Sk Asfaq Hossain, ISI Kolkata
Title: Quantum Symmetry on Potts Model

Potts Model is a model of interacting spins on a crystalline lattice. In this talk we try to define the notion of Quantum Symmetry for Potts Model and try to explore the relations between Quantum Symmetry on Potts Model and Quantum Symmetry of the underlying graph structure. This is based On...

Date/Time: Thursday, September 19, 2019 - 11:35 to 12:35
Venue: SMS Seminar Room
Speaker: Yasuyuki Kawahigashi, University of Tokyo
Title: Conformal field theory and operator algebras: lecture-4

I will present interactions among 2-dimensional conformal field theory, which is a kind of quantum field theory in physics, theory of operator algebras and the Moonshine conjecture which predicted mysterious relations between the finite simple group Monster and the elliptic modular function. I...

Date/Time: Monday, September 16, 2019 - 11:35 to 12:35
Venue: SMS Seminar Room
Speaker: Yasuyuki Kawahigashi, University of Tokyo
Title: Conformal field theory and operator algebras: lecture-3

I will present interactions among 2-dimensional conformal field theory, which is a kind of quantum field theory in physics, theory of operator algebras and the Moonshine conjecture which predicted mysterious relations between the finite simple group Monster and the elliptic modular function. I...

Date/Time: Thursday, September 12, 2019 - 18:30 to 20:00
Venue: SMS Seminar Room
Speaker: Yasuyuki Kawahigashi, University of Tokyo
Title: Conformal field theory and operator algebras: lecture-2

I will present interactions among 2-dimensional conformal field theory, which is a kind of quantum field theory in physics, theory of operator algebras and the Moonshine conjecture which predicted mysterious relations between the finite simple group Monster and the elliptic modular function. I...

Date/Time: Monday, September 9, 2019 - 17:30 to 18:30
Venue: SMS Seminar Room
Speaker: Yasuyuki Kawahigashi, University of Tokyo
Title: Conformal field theory and operator algebras: Lecture-1

I will present interactions among 2-dimensional conformal field theory, which is a kind of quantum field theory in physics, theory of operator algebras and the Moonshine conjecture which predicted mysterious relations between the finite simple group Monster and the elliptic modular function. I...

Date/Time: Monday, September 9, 2019 - 11:35 to 12:35
Venue: SMS seminar room
Speaker: Soumendu Sundar Mukherjee, Indian Statistical Institute Kolkata
Title: On offline changepoint estimation for network data

We consider the problem of offline changepoint estimation in a network-valued time series where the entire series is observed beforehand. We analyze a CUSUM statistic for this problem, and obtain, under minimal conditions, the rate of convergence of the resulting changepoint estimator in terms...

Date/Time: Thursday, August 8, 2019 - 03:30 to 04:30
Venue: SMS seminar room
Speaker: Dr. Ramesh Prasad Panda, NISER, PDF
Title: Some invariants of power graphs and combinatorial properties of finite groups
Date/Time: Tuesday, August 6, 2019 - 03:30 to 04:30
Venue: SMS seminar room
Speaker: Dr. Nabin Kumar Meher, NISER, PDF
Title: Transcendence of Hurwitz zeta type series and related questions

Abstract: In this talk, we discuss the transcendence of special values of some Hurwitzzeta type series. Moreover, we find a linear independence criteria of these series undersome mild conditions. We also show that, for any a, b ∈ (0, 1) ∩ Q with a + b = 1, atleastone of the ζ(2k, a) or ζ(2k, b)...

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School of Mathematical Sciences

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