Past Events

Date/Time: Tuesday, November 15, 2016 - 13:30 to 14:30
Venue: Mathematics Seminar Hall
Speaker: Somnath Basu, IISER Kolkata

Abstract: We shall discuss associative binary structures and analyze why such a structure is not a homotopy invariant. This naturally leads to higher associative structures, often called $A_\infinity$ structures, which are prevalent in topology, geometry and mathematical physics. We shall...

Date/Time: Monday, November 7, 2016 - 11:35 to 12:30
Venue: Mathematics Seminar Hall
Speaker: Gopinath Panda, IIT, Bhubaneswar
Title: Optimal Balking Strategies in Markovian Queues with Vacations

Abstract: Queueing theory is vastly used to study service systems arising in management problems, where customers are considered to be indifferent in the sense that the decisions to control a system, are only made by the management and the users are impelled to follow the decisions. However, for...

Date/Time: Tuesday, November 1, 2016 - 01:30
Venue: Seminar Hall
Speaker: Anoop V.P., NISER
Title: To be announced
Date/Time: Monday, October 31, 2016 - 11:35 to 12:30
Venue: SMS seminar hall
Speaker: Soma Maity, Ramkrishna Mission Vivekananda University, Belur.
Title: ON THE STABILITY OF Lp-NORMS OF RIEMANNIAN CURVATURE AND ON WILKING’S CRITERION FOR RICCI FLOW

Let M be a compact manifold without boundary. One can define a smooth real valued function of the space of Riemannian metrics of M by taking Lp-norm of Riemannian curvature for p ≥ 2. Compact irreducible locally symmetric spaces are critical metrics for this functional. I will show that rank 1...

Date/Time: Friday, October 28, 2016 - 09:30 to 10:30
Venue: SMS, Seminar Room
Speaker: Dr. Krishanu Maulik, Indian Statistical Institute, Kolkata
Title: Urn Models
Abstract: We shall discuss the urn model introduced by Polya and...
Date/Time: Monday, October 24, 2016 - 11:35 to 12:30
Venue: SMS seminar hall
Speaker: Ananya Lahiri, Chennai Mathematical Institute
Title: On two dimensional polynomial phase signal parameter estimation

Abstract: Two dimensional polynomial phase signal has uses in modeling black and white texture. We will discuss how to estimate the parameters of the model from observed data set and about the large sample properties of these estimators.

Date/Time: Friday, October 21, 2016 - 15:30
Venue: SMS Seminar Hall
Speaker: Arnab Mandal, ISI Kolkata
Title: Quantum symmetry groups of the dual of finitely generated discrete groups

Starting with some basic definitions related to compact quantum groups we introduce the notion of quantum symmetry groups. Here we discuss one particular case coming from group $C^*$-algebras equipped with word length function. Moreover, few general properties and examples...

Date/Time: Monday, October 17, 2016 - 11:35
Venue: SMS seminar room
Speaker: Bikramaditya Sahu, NISER-Bhubaneswar
Title: Blocking sets of PG(2,q) with respect to a conic

For a given nonempty subset L of the line set of the projective plane PG(2,q), a blocking set with respect to L (or simply, an L-blocking set) is a subset B of the point set of PG(2,q) such that every line of L contains at least one point of B. Let E (respectively; T, S) denote the set of all...

Date/Time: Thursday, October 6, 2016 - 04:35 to 05:30
Venue: SMS Seminar Hall
Speaker: Sunil Kumar Prajapati, Hebrew University of Jerusalem, Israel
Title: Total Character and Irreducible Characters of p-groups

The realization of the Total Character (or Gel’fand Character) τG of a finite group G, i.e. the sum of all ordinary irreducible characters of G is an old problem in character theory of finite groups. One possible approach is to try to realize τG as a polynomial in some irreducible character of G...

Date/Time: Monday, September 26, 2016 - 15:30 to 16:30
Venue: Seminar Hall (SMS)
Speaker: Dibyendu Roy, IIT, Kharagpur
Title: Fault analysis and weak key-IV attack on Sprout and constructions of T-function

This talk basically consists of two parts. First is, attacks on the stream cipher 'Sprout' and the second is, constructions of T-function, which carries good cryptographic properties.The design Specification of Sprout was proposed at FSE, 2015. Firstly, I will discuss about fault attack on...

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