# Past Events

Date/Time: Monday, November 10, 2014 - 11:35 to 12:35
Venue: LH-101
Speaker: Professor B. Ramakrishnan, HRI, Allahabad
Title: Representations of integers as sums of squares

Finding formulas for the number of representations of integers as sums of integer squares has a long history. In this talk we give a brief history of the problem and indicate the use of modular forms in obtaining certain formulas. We also discuss about some related questions.

Date/Time: Monday, November 3, 2014 - 11:35 to 12:35
Venue: LH-101
Speaker: Moni Kumari, NISER, Bhubaneswar
Title: Euler's famous prime generating polynomial
Abstract: Let $f_q(x)= x^2+x+q$ where $q$ is a prime integer. If $q=41$ then the above polynomial assume prime values for $n=0,1, 2, \ldots, q-2=39$. What are the prime $q$ for which the above polynomial assume prime values for $n=0, 1, 2, \ldots, q-2$? One can verify that...
Date/Time: Monday, October 27, 2014 - 11:35 to 12:35
Venue: LH-101
Speaker: Abhash Kumar Jha, NISER, Bhubaneswar
Title: Adjoint of some linear maps on the space of Jacobi cusp forms
Let $S_k$ denote the space of cusp forms of weight $k$ for the full modular group on the upper half plane. For a fixed $g\in S_l$ define a linear map $T : S_k \longrightarrow S_{k+l}$ by $T(f) = fg$. We calculate the adjoint of the above map. We also calculate the adjoint of...
Date/Time: Monday, October 20, 2014 - 11:35 to 12:35
Venue: LH-101
Speaker: Rajula Srivastava, NISER, Bhubaneswar
Title: Tree t spanners in 2 connected outerplanar graph

Abstract: The problem of finding sparse underlying subgraphs, which also maintain the distance information between any 2 pair of vertices, is an important one in graph theory, with several applications. One approach would be to find tree $t$-spanners, i.e.,...

Date/Time: Wednesday, October 15, 2014 - 11:35 to 12:35
Venue: LH301
Speaker: Dr. Suchismita Das,
Title: How to measure uncertainty in the weighted lifetime distribution

Every probability distribution has some uncertainty associated with it. The concept of Shannon’s entropy provide a quantitative measure of this uncertainty. But for some probability distributions the Shannon’s entropy measure may be negative and then it is no longer an uncertainty measure. To...

Date/Time: Monday, October 13, 2014 - 11:35 to 12:35
Venue: LH-101
Speaker: Dr. Jaban Meher, IISC, Bangalore
Title: Product of eigen forms
Date/Time: Friday, October 10, 2014 - 15:30 to 16:30
Venue: PL8
Speaker: Dr. Rahul Garg, Israel Institute of Technology, Haifa, Israel
Title: The lattice point counting problem on the Heisenberg groups

Abstract : I shall begin with the description of the lattice points counting...

Date/Time: Thursday, September 25, 2014 (All day) to Saturday, September 27, 2014 (All day)

National Workshop on Cryptology-2014(under the aegis of Cryptology Research Society of India) will be held at IIITDM...

Date/Time: Thursday, September 11, 2014 - 11:35 to 12:35
Venue: LH301
Speaker: Dr. Tanusree Khandai,
Title: Integrable representations of Multiloop Lie algebras of type $A_1$
Abstract: Given a finite-dimensional simple Lie algebra L, one can define a Lie algebra structure on $M = L \otimes \mathbb{C}[t_1^{\pm1},...t_n^{\pm1}]$, $n\in \mathbb{Z}_+$. Such a Lie algebra is called a multiloop Lie algebra. The aim of the talk is to present a class of...
Date/Time: Wednesday, September 10, 2014 - 11:35 to 12:35
Venue: LH301
Speaker: Dr. Parashar Mohanti, Department of Mathematics & Statistics, Indian Institute of Technology, Kanpur
Title: Compleletely bounded multipliers on $L^p$
Abstract: In the last decades study of classical harmonic analysis problems in the setting of operator space structures is a very active area of research. In this talk we will discuss the problems of Fourier multipliers on $L^p$ spaces, which is a central theme in harmonic...