Wednesday, May 27, 2026

Yashovardhan Singh Gautam (IIT, Roorkee) - May 28, 2026, 4:00 PM- 5:00 PM IST

 Dear all,

Abstract
In this talk, we study the Koshliakov zeta function ηp(s), whose theory appears to be more involved than that of its counterpart ζp(s), owing to the fact that its defining series is not of Dirichlet type. We derive formulas for ηp(s) at both even and odd values of s. In the limiting case p → ∞, our results yield the celebrated formulas of Euler and Ramanujan for the Riemann zeta function. Moreover, our results lead to several consequences concerning closed-form expressions for Lambert series and their arithmetic properties, recovering results due to Berndt, Cauchy, Ramanujan, and others. We also propose p-analogues of the transformation formula for the classical Eisenstein series. Moreover, we introduce two families of p-analogues of Ramanujan polynomials and establish functional equations satisfied by them.

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Gaurav Bhatnagar, Atul Dixit, Bibekananda Maji, Krishnan Rajkumar, and Manjil Saikia
Special Functions and Number Theory Seminar

Sunday, May 10, 2026

Nargish Punia (IIT, Roorkee) - Thursday, May 14, 2026 - 4:00 PM (IST)

 Dear all,


The talk this week is by Nargish Punia of IIT, Roorkee. 

Talk Announcement: 

Title: On Partition classes arising from parity, differences and repeated smallest parts
Speaker: Nargish PuniaIndian Institute of Technology, Roorkee, India
When: May 14, 2026, 4:00 PM- 5:00 PM IST 
Where: Zoom: Write to the organisers at sf and nt at gmail.com for the link

Live Link: https://youtube.com/live/BMrnfrIzjxs?feature=share




Abstract
In this talk, we present various classes of partition functions such as those related to the parity of the number of parts, to differences of partition numbers, and to partitions with a repeated smallest part. We establish identities connecting these various classes of partitions. Moreover, we will discuss how these identities help us to extend the Euler’s partition theorem. If time permits, we will also present an analogue of Legendre’s theorem of the partition-theoretic interpretation of Euler’s pentagonal number theorem. This is joint work with Rahul Kumar.

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Gaurav Bhatnagar, Atul Dixit, and Krishnan Rajkumar,
Special Functions and Number Theory Seminar