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The Institute of Mathematical Sciences
A national institute for research in the theoretical sciences

Upcoming Events

Oct 07
14:00-15:00
Deep Thakur | IMSc
Moments of Automorphic L-functions (OGCE)
In this talk, we introduce a new method to obtain lower bounds for moments of L-functions for all real k>0. In particular, our method applies to families of higher degree automorphic L-functions which were previously inaccessible.
Mathematics Seminar | Alladi Ramakrishnan Hall
Oct 08
15:30-16:30
TBA | TBA
Mathematics Colloquium-TBA
TBA
Mathematics Colloquium | Alladi Ramakrishnan Hall
Oct 09
09:30-11:15
Mohit Garg
Discrete Maths
TCS Seminar | E C G Sudarshan Hall
Oct 09
14:00-15:00
Meena Mahajan | IMSc
Tight Lower Bounds for Algebraic Communication
Communication complexity studies how much information must be exchanged to solve a problem whose input is split among two or more parties. The classical setting deals with Boolean inputs split between two parties. In the algebraic variant, inputs, messages, and computation are over some (potentially infinite) field. This variant, introduced by Abelson in 1978 and developed by Grigoriev in 2008, is relatively unexplored. In this talk, I will describe this setting, the hurdles to directly applying Boolean techniques, and the techniques that do work to give lower bounds. I will describe some specific lower bounds we establish. More details can be found in the preprints https://arxiv.org/abs/2609.17082 and https://eccc.weizmann.ac.il/report/2026/182/ This is joint work with Manon Blanc, Prateek Dwivedi, Magnus Hansen, and Nutan Limaye, at ITU Copenhagen. This talk will be in hybrid mode. Please find zoom link below: https://zoom.us/j/99598370034 Meeting ID: 995 9837 0034 Passcode: 941422
TCS Seminar | Alladi Ramakrishnan Hall
Oct 09
14:30-15:30
Sunil Jaiswal | Wayne State University
Equilibrium Statistics as Conditional Laws and Conservation-Induced Correlations
Long-range correlations are used to probe collective behavior in many-body systems. In finite systems, however, global conservation of energy, momentum, particle number, and other conserved charges can itself generate correlations between otherwise independent degrees of freedom. It is therefore crucial to remove the contribution of these conservation-induced correlations from observed long-range correlations for understanding the nature of the emergent collectivity. In this talk, I will present a unified conditional-probability framework in which equilibrium statistics and conservation-induced correlations emerge from conditioning on additive conserved quantities. The one-mode conditional law yields the Maxwell–Boltzmann, Bose–Einstein, and Fermi–Dirac distributions at leading saddle order, while the two-mode law gives the leading finite-rank covariance induced by exact conservation. This structure allows us to construct observables orthogonal to selected conserved quantities, for which the leading conservation-induced covariance vanishes. As an application, I will discuss long-range correlations in high-energy p-Pb collisions, which exhibit patterns resembling collective behaviour in collisions of large nuclei where they are commonly associated with hydrodynamic collective response. Conservation effects are particularly relevant in these smaller systems because fewer particles are produced. Using PYTHIA generated events, I will illustrate how conservation-aligned and conservation-orthogonal contributions can be separated, and discuss the implications for interpreting the emergent collective behaviour. [Based on arXiv:2606.29050]
Physics Seminar | E C G Sudarshan Hall
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  • Cosmic Connections
 Second Edition: AI/ML Across Cosmic Scales
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  • Call for nominations: 2026 IPA Rahul Basu Memorial Award
  • Dr C Ramya (Theoretical Computer Science) has been selected as an associate of the Indian Academy of Sciences, Bengaluru
  • Nag Memorial Public Lecture
  • Prof A P Balachandran, In Memoriam
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The Institute of Mathematical Sciences
IV Cross Road, CIT Campus
Taramani
Chennai 600 113
Tamil Nadu, India.
Phone : 91-44-22543100
Fax      : 91-44-22541586

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