Chennai Mathematical Institute

Seminars




Today's Seminar
  • 17-08-18
    2.00 pm, Lecture Hall 6
    Geometry of quantum state spaces
    N.D. Hari Dass
    TIFR-TCIS Hyderabad.
    Abstract
    Starting with the states of polarisation of classical electromagnetic radiation (Riemann Sphere), I will present the state space of qubits (Bloch Sphere). I will discuss the pure and mixed cases separately. The space of pure states always turn out to be complex manifolds and more specifically Kaehler manifolds. After introducing CP_N and Kaehler manifolds, I shall present the geometry of finite dimensional quantum state spaces (pure and mixed) in the so called weak value coordinates. The conceptual significance of weak values as Dirac-Kirkwood quasi-probabilities will be pointed out. I shall conclude with applications to the so called optimal measurements and a connection to the Majorana star representations.


Forthcoming Seminars
  • 21-08-18
    3.30 pm, Seminar Hall
    The $p$-curvature conjecture and monodromy about simple closed loops(Abstract)
    Ananth Shankar
    MIT.

  • 29-08-18
    PUBLIC VIVA-VOCE NOTIFICATION
    2.00 pm, Seminar Hall
    A theory of assertions for Dolev-Yao models(Abstract)
    Vaishnavi Sundararajan
    Chennai Mathematical Institute.

Past Seminars (this year)
  • 16-08-18
    11.45, Seminar Hall
    How many deleted bits can one recover?(Abstract)
    Venkat Guruswami
    Carnegie Mellon University, USA.

  • 10-08-18
    3:30-4:45 pm, Lecture Hall 1
    Conormal Varieties on Cominuscule Grassmannians(Abstract)
    Rahul Singh
    Northeastern University, USA.

  • 10-08-18
    11:30 am, Seminar Hall
    Direct Detection of Sub-GeV Dark Matter(Abstract)
    Mukul Sholapurkar
    SUNY, Stonybrook USA.

  • 09-08-18
    3.15-4.30, Seminar Hall
    Ayoub's Foliated Topology(Abstract)
    Madhav Nori
    University of Chicago, USA.

  • 09-08-18
    2--3 pm, Seminar Hall
    The Lindelof class of L- functions(Abstract)
    V Kumar Murty
    University of Toronto.

  • 07-08-18
    3.30 pm, Seminar Hall
    Regular abstractions with applications to Infinite state verification(Abstract)
    Prakash Saivasan
    Institute of Theoretical Computer Science, Tech. Univ. of Braunshcweig, Germany.

  • 02-08-18
    2.00 pm, Lecture Hall 6
    Aretakis Instability(Abstract)
    Amitabh Virmani
    Chennai Mathematical Institute.

  • 25-07-18
    2.00 pm, Lecture Hall 2
    Graph homomorphisms from a topological point of view(Abstract)
    Shuchita Goyal
    IIT Bombay.

  • 19-07-18
    LECTURE COURSE
    11.30 am, Lecture Hall 5
    Reconstruction of local bulk physics in AdS/CFT(Abstract)
    Subho Roy
    IIT Hyderabad.

  • 18-07-18
    LECTURE COURSE
    11.30 am, Lecture Hall 5
    Reconstruction of local bulk physics in AdS/CFT(Abstract)
    Subho Roy
    IIT Hyderabad.

  • 17-07-18
    LECTURE COURSE
    11.30 am, Lecture Hall 5
    Reconstruction of local bulk physics in AdS/CFT(Abstract)
    Subho Roy
    IIT Hyderabad.

  • 16-07-18
    LECTURE COURSE
    11.30 am, Lecture Hall 5
    Reconstruction of local bulk physics in AdS/CFT(Abstract)
    Subho Roy
    IIT Hyderabad.

  • 29-06-18
    11.30 am, Lecture Halll 2
    Rank Identities and Finite von Neumann Algebras(Abstract)
    Soumyashant Nayak
    Upenn.

  • 20-06-18
    3:30 pm, Lecture Hall 6
    Torsors on semistable curves and the problem of degenerations(Abstract)
    V Balaji
    Chennai Mathematical Institute.

  • 14-06-18
    MSc THESIS DEFENSE
    12 noon - 12:30 pm, Lecture hall 5
    Verifying flat FIFO systems through counter systems(Abstract)
    Archit Chauhan
    Chennai Mathematical Institute.

  • 14-06-18
    MSc THESIS DEFENSE
    11:30 am - 12 noon, Lecture hall 5
    Playing with repetitions in data words(Abstract)
    Anirban Majumdar
    Chennai Mathematical Institute.

  • 06-06-18
    3:30 pm, Lecture Hall 6
    Torsors on semistable curves and the problem of degenerations(Abstract)
    V Balaji
    Chennai Mathematical Institute.

  • 06-06-18
    PUBLIC VIVA-VOCE NOTIFICATION
    2.00-3:15 pm, Lecture Hall 6
    On the Hilbert Functions of Graded Rings and on the F-rationality of Rees Algebra(Abstract)
    Mitra Koley
    Chennai Mathematical Institute.

  • 30-05-18
    3.30 pm, Room 327, IMSc
    Ordinal Analysis using Provability Logics(Abstract)
    Alakh Dhruv Chopra
    Chennai Mathematical Institute.

  • 30-05-18
    MSc THESIS DEFENCE
    11.00 am, Lecture Hall 6
    Rank Maximal Matching and its Variants(Abstract)
    Sayantan Sen
    Chennai Mathematical Institute.

  • 18-05-18
    MSc Thesis Defence
    4:00 pm, Lecture Hall 4
    Playing Mancala without Human Knowledge(Abstract)
    R Siddarth
    Chennai Mathematical Institute.

  • 16-05-18
    MSc VIVA
    11.00 am, Lecture Hall 4
    Manifold Learning for Escaping Saddle points and Tensor Decomposition(Abstract)
    Akash Kumar
    Chennai Mathematical Institute.

  • 16-05-18
    MSc Thesis Defence
    10.00 am, Lecture Hall 2
    A logic for synchronous relations(Abstract)
    Varun Ramanathan
    Chennai Mathematical Institute.

  • 09-05-18
    MSc Thesis Talk
    15:30 - 16:30, IMSc, Room 326
    Points of small height in certain non abelian extensions(Abstract)
    Soumyadip Sahu
    Chennai Mathematical Institute.

  • 09-05-18
    MSc Thesis Talk
    4.45pm - 5.45 pm, ARK Hall, IMSc
    Virtual Characters on the theory of Artin $L$-functions(Abstract)
    Subham Bhakta
    Chennai Mathematical Institute.

  • 09-05-18
    3.00 pm, Lecture Hall 2
    Holographic dual to charged SYK from 3D Gravity and Chern-Simons(Abstract)
    Lata Kh Joshi
    TIFR, Mumbai.

  • 07-05-18
    MSc Thesis Seminar
    11 am, Lecture Hall 2
    Using Reinforcement learning to learn Pallanguzhi(Abstract)
    Chayan Banerjee
    Chennai Mathematical Institute.

  • 04-05-18
    STUDENT SEMINAR
    2.00-3.00 p.m., Lecture Hall 2
    Automorphisms of the Rational World(Abstract)
    Pachaiyappan N
    Chennai Mathematical Institute.

  • 02-05-18
    M.Sc Thesis Talk
    2.00 p.m., Lecture Hall 2
    Explicit, Almost Optimal Epsilon-Biased Sets(Abstract)
    Anupa Sunny
    Chennai Mathematical Institute.

  • 30-04-18
    STUDENT SEMINAR
    2.00 p.m., Seminar Hall
    Coburn's theorem(Abstract)
    Malay Mandal
    Chennai Mathematical Institute.

  • 30-04-18
    STUDENT SEMINAR
    11.30 a.m. - 12.30 p.m., Seminar Hall
    Canonical Anti-commutation Relations(Abstract)
    Jagadish Pine
    Chennai Mathematical Institute.

  • 27-04-18
    MSc Thesis Talk
    2.00-3.00 pm, Lecture Hall 2
    On the irrationality of zeta at odd positive integers(Abstract)
    Aritriya Mukhapadhyay
    Chennai Mathematical Institute.

  • 27-04-18
    M.Sc. Thesis Defence
    11:00 am, Lecture Hall 2
    Fast exact exponential-time algorithms using computations over the subset lattice(Abstract)
    Avinandan Das
    Chennai Mathematical Institute.

  • 25-04-18
    Doctoral Committee Review Talk
    11 am - 12 noon, Lecture Hall 2
    Einstein's Equations from Entanglement Thermodynamics(Abstract)
    Pratik Roy
    Chennai Mathematical Institute.

  • 20-04-18
    MSc Thesis Seminar
    2.00 pm, Seminar Hall
    Construction of symplectic cobordisms(Abstract)
    Yash Deshmukh
    Chennai Mathematical Institute.

  • 19-04-18
    MSc Thesis Talk
    3:30 pm, Seminar Hall
    Teichmuller Theory and the Nielson Thurston Classification Theorem(Abstract)
    Neetal Neel
    Chennai Mathematical Institute.

  • 19-04-18
    MSc Thesis Talk
    2.00 pm, Seminar Hall
    Collars on Riemann surfaces and its generalization(Abstract)
    Satyajit Maity
    Chennai Mathematical Institute.

  • 19-04-18
    MSc Thesis Defence
    2.00 pm, Lecture Hall 4
    On Completely Mixed Stochastic games(Abstract)
    Purba Das
    Chennai Mathematical Institute.

  • 18-04-18
    2.00 pm, Seminar Hall
    Alternating Sign Matrices(ASMs)(Abstract)
    Nimisha Pahuja
    IISc, Bengaluru.

  • 18-04-18
    11.30 am, Seminar Hall
    A non-perturbative paradigm and the Quark-Gluon Plasma(Abstract)
    Ayan Mukhopadhyay
    IIT Madras.

  • 16-04-18
    3.30 pm, Seminar Hall
    The Goresky-MacPherson formula for topic arrangements(Abstract)
    Priyavrat Deshpande
    Chennai Mathematical Institute.

  • 13-04-18
    11.00 a.m., Seminar Hall
    Dualities in Mathematics and Physics(Abstract)
    Peter Bouwknegt
    Australian National University.

  • 12-04-18
    3:30 pm, Seminar Hall
    Formal orbifolds and bundles in positive characteristics(Abstract)
    Manish Kumar
    ISI Bangalore.

  • 23-03-18
    2.00 pm, Seminar Hall
    Surface operators in Gauge theories-2
    Sujay Ashok
    Institute of Mathematical Sciences, Chennai.

  • 22-03-18
    2.00 pm, Seminar Hall
    Surface operators in Gauge theories-1
    Sujay Ashok
    Institute of Mathematical Sciences, Chennai.

  • 19-03-18
    3:30 pm, Lecture Hall 801(Abstract)
    Goutham Rajendran
    University of Chicago.

  • 14-03-18
    3.30 pm, Seminar Hall
    Silicon to semiconductor: A journey through Machine Learning, Algorithms, Physics and Software(Abstract)
    Jagdish Saraswatula
    KLA Tencore, Chennai.

  • 13-03-18
    Every Tuesday, 3:30 - 5:00 pm Location: Seminar Hall
    Random Talks - Lecture Series
    Atiyah-Singer Index theorem(Abstract)
    M.S. Raghunathan
    NCM Mumbai.

  • 09-03-18
    3:30 pm, NKN Hall
    Poochi Art (Poochi means ‘insect' in Tamil)(Abstract)
    PoochiVenkat
    .

  • 09-03-18
    2.00 pm, Lecture Hall 5
    Modelling binary systems of compact objects: the fourth-order post-Newtonian dynamics(Abstract)
    Guillaume Faye
    (GReCO, Institut d'Astrophysique de Paris, UMR 7095, CNRS, Sorbonne Université).

  • 06-03-18
    Every Tuesday, 3:30 - 5:00 pm Location: Seminar Hall
    Random Talks - Lecture Series
    Atiyah-Singer Index theorem(Abstract)
    M.S. Raghunathan
    NCM Mumbai.

  • 02-03-18
    3:30 pm, Lecture Hall 3
    Isocrystals associated to arithmetic jet spaces of abelian schemes(Abstract)
    Arnab Saha
    Australian National University.

  • 02-03-18
    2.00 pm, Lecture Hall 5
    Black holes from cosmic inflation(Abstract)
    Alexander Vilenkin
    Tufts University, USA.

  • 02-03-18
    2:00pm, Lecture Hall 6
    An Introduction to Nori Motives (in 3 parts)
    Utsav Choudhury
    IISER Kolkata.

  • 02-03-18
    2:00 pm - 3:15 pm, Seminar Hall
    RESEARCH SEMINAR ANNOUNCEMENT
    Understanding Sea Ice Melting via Functional Data Analysis(Abstract)
    Purba Das
    Chennai Mathematical Institute.

  • 01-03-18
    3:30pm, Lecture Hall 6
    An Introduction to Nori Motives (in 3 parts)
    Utsav Choudhury
    IISER Kolkata.

  • 01-03-18
    CMI Arts Initiative Lecture
    2:00 pm, Seminar Hall
    The End of the World(Abstract)
    Emily Holleman
    Writers in Residence programme.

  • 28-02-18
    3:30 pm, Seminar Hall
    Naturalist-inspired Chemical Ecology: From Insect Dreams to Virtual Reality(Abstract)
    Shannon B Olsson
    NCBS, Bangalore.

  • 28-02-18
    The series will take place every week on Tuesday’s and Wednesday's starting on 16, 22 Jan (Monday), 23, 24 Janand ending on Feb 27, 28. The Tuesday meetings will take place at 3:30pm, the Wednesday meetings will take place at 2:00 pm.
    Venue: 22 & 31 Jan, 20 Feb: Lecture Hall 2, Other days: Seminar Hall
    Seminar on Schubert Varieties(Abstract)
    Lakshmibai and Seshadri
    C.S. Seshadri
    B. Ravinder
    Manoj Kummini and Vijay Ravikumar
    Senthamarai Kannan and KV Subrahmanyam
    Chennai Mathematical Institute.

  • 27-02-18
    2:00 pm, Seminar Hall
    Biosynthetic Infochemical Communication(Abstract)
    Shannon B Olsson
    NCBS, Bangalore.

  • 26-02-18
    2:00pm, Lecture Hall 6
    An Introduction to Nori Motives (in 3 parts)
    Utsav Choudhury
    IISER Kolkata.

  • 23-02-18
    3.30 pm, Lecture Hall 6
    Cadabra : A Symbolic computer algebra for multi-indexed objects(Abstract)
    Sitender Kashyap
    HRI.

  • 23-02-18
    11.30 -- 12.30, Lecture Hall 1
    Gossip Protocols and the Logic of Knowledge(Abstract)
    Hans van Ditmarsch
    CNRS.

  • 21-02-18
    3.30 pm, Lecture Hall 6
    An invitation to real-time physics in the AdS/CFT correspondence(Abstract)
    Alexandre Serantes
    ICTS.

  • 21-02-18
    3:30 pm, Seminar Hall
    Flow Interfaces: Compositional Abstractions for Concurrent Data Structures (Abstract)
    Siddharth Krishna
    Courant Institute of Mathematical Sciences, NYU.

  • 13-02-18
    Every Tuesday, 1:45 - 3:20 pm with a 5-minute break. Location: Seminar Hall
    Random Talks - Lecture Series
    Compact Lie groups(Abstract)
    M.S. Raghunathan
    NCM, Mumbai.

  • 07-02-18
    3.30 pm, Seminar Hall
    How much will it rain in July 2018?(Abstract)
    Srinivas Bhogle
    Honorary Scientist, CSIR Fourth Paradigm Institute.

  • 07-02-18
    10.30 am, Seminar Hall
    Topological connectivity of graph coloring complexes of certain product graphs(Abstract)
    Samir Shukla
    ISI, Bengaluru.

  • 06-02-18
    2.00 p.m., Lecture Hall 5
    CFT OPE coefficients from modularity(Abstract)
    Diptarka Das
    Albert Einstein Institute, Germany.

  • 06-02-18
    Every Tuesday, 1:45 - 3:20 pm with a 5-minute break. Location: Seminar Hall
    Random Talks - Lecture Series
    Exotic Spheres (Continued)(Abstract)
    M.S. Raghunathan
    NCM, Mumbai.

  • 05-02-18
    PUBLIC VIVA-VOCE NOTIFICATION
    11.00 am, Seminar Hall
    On some lower bounds in Arithmetic Circuit complexity(Abstract)
    Suryajith Chillara
    Chennai Mathematical Institute.

  • 31-01-18
    3.30 p.m., Seminar Hall
    Some Mathematical Aspects of Laya and Mrudangam Playing(Abstract)
    Sangita Kalanidhi Prof. Trichy Sankaran
    Professor Emeritus, Senior Scholar, Music Department, York University, Toronto, Canada.

  • 31-01-18
    2.00 pm, Lecture Hall 6
    Influence of the geometry on the onset of superconductivity(Abstract)
    Virginie Bonnaillie-Noel
    CNRS, ENS.

  • 30-01-18
    Every Tuesday, 1:45 - 3:20 pm with a 5-minute break. Location: Seminar Hall
    Random Talks
    Exotic Spheres(Abstract)
    M.S. Raghunathan
    NCM Mumbai.

  • 30-01-18
    11:50 am, Seminar Hall
    Exact homotopy type of certain graph complexes(Abstract)
    Anurag Singh
    IIT Kanpur.

  • 25-01-18
    3.30 pm, Lecture Hall 3
    On the Congruence Subgroup Problem for Algebraic Groups Over Number Fields
    M.M. Radhika
    ISI Bangalore.

  • 25-01-18
    3:30 pm, Seminar Hall
    Shatter functions of geometric hypergraphs(Abstract)
    Xavier Goaoc
    Université Paris-Est Marne-la-Vallée.

  • 25-01-18
    3:30 pm, Lecture Hall 6
    Series of lectures on supergravity(Abstract)
    Bindusar Sahoo
    IISER TVM.

  • 24-01-18
    3:30 pm, Seminar Hall
    Helly-type theorems and topological combinatorics(Abstract)
    Xavier Goaoc
    Université Paris-Est Marne-la-Vallée.

  • 24-01-18
    3:30 pm, Lecture Hall 6
    Series of lectures on supergravity(Abstract)
    Bindusar Sahoo
    IISER TVM.

  • 23-01-18
    3:30 pm, Lecture Hall 6
    Series of lectures on supergravity(Abstract)
    Bindusar Sahoo
    IISER TVM.

  • 23-01-18
    Every Tuesday, 1:45 - 3:20 pm with a 5-minute break. Location: Seminar Hall
    Random Talks - Lecture Series
    The H Cobordism Theorem - Second Lecture(Abstract)
    M.S. Raghunathan
    NCM, Mumbai.

  • 22-01-18
    3:30 pm, Lecture Hall 6
    Series of lectures on supergravity(Abstract)
    Bindusar Sahoo
    IISER TVM.

  • 22-01-18
    3:30 pm, Seminar Hall
    Some recent trends in discrete and computational geometry(Abstract)
    Xavier Goaoc
    Université Paris-Est Marne-la-Vallée.

  • 22-01-18
    11.30 am, Seminar Hall
    A spin on gravitational radiation from the classical double copy(Abstract)
    Siddharth Prabhu
    Yale University, USA.

  • 17-01-18
    3.30-4.30 pm, Seminar Hall
    R.K. Rubugunday Distinguished Lecture
    The Bures-Wasserstein distance on positive definite matrices(Abstract)
    Rajendra Bhatia
    Ashoka University, Delhi.

  • 17-01-18
    2.00-3.00 pm, Seminar Hall
    K. Lakshmanan Memorial Distinguished Lecture
    The detection of gravitational waves and the two body problem in general relativity(Abstract)
    Bala Iyer
    ICTS-TIFR, Bengaluru.

  • 16-01-18
    Every Tuesday, 1:45 - 3:20 pm with a 5-minute break. Location: Seminar Hall
    Random Talks - Lecture Series
    A proof of uniformization - First Talk(Abstract)
    M.S. Raghunathan
    NCM, Mumbai.

  • 12-01-18
    3.30 pm -- 4.30 pm, Lecture Hall 6
    MSc Student Talks
    Collars on Riemann Surfaces(Abstract)
    Satyajit Maity
    Chennai Mathematical Institute.

  • 11-01-18
    3.30-4.30 pm, Seminar Hall
    Mini Course by Prof. Alexandru Oancea
    Floer theory and applications in symplectic topology(Abstract)
    Alexandru Oancea
    Univ. Pierre et Marie Curie, France.

  • 10-01-18
    3:30 pm, Seminar Hall
    Associated varieties of discrete series representations(Abstract)
    Gautam Gopal Krishnan
    Cornell University, USA.

  • 10-01-18
    2.00-3.00 pm, Seminar Hall
    Mini Course by Prof. Alexandru Oancea
    Floer theory and applications in symplectic topology(Abstract)
    Alexandru Oancea
    Univ. Pierre et Marie Curie, France.

  • 09-01-18
    3.30-4.30 pm, Seminar Hall
    Mini Course by Prof. Alexandru Oancea
    Floer theory and applications in symplectic topology(Abstract)
    Alexandru Oancea
    Univ. Pierre et Marie Curie, France.

  • 09-01-18
    2.00 pm, Seminar Hall
    Narasimhan-Seshadri Revisited(Abstract)
    M.S. Raghunathan
    NCM Mumbai.

  • 08-01-18
    3.30 pm, Seminar Hall
    PUBLIC VIVA-VOCE NOTIFICATION
    Euclidean algorithm for certain algebraic number fields(Abstract)
    Subramani Muthukrishnan
    Chennai Mathematical Institute.

  • 08-01-18
    2.00 pm - 3:15 pm, Seminar Hall
    Minkowski's inequalities for multiplicities of ideals(Abstract)
    J.K. Verma
    IIT-B, Mumbai.

  • 04-01-18
    3:30-4:30 pm, Seminar Hall
    Manin's conjecture and the Fujita invariant of finite covers(Abstract)
    Akash Sengupta
    Princeton University.

  • 04-01-18
    2.00 pm, Seminar Hall
    Narasimhan-Seshadri Revisited(Abstract)
    M.S. Raghunathan
    NCM Mumbai.

  • 03-01-18
    3:30 pm, Seminar Hall
    Fujita type conjectures for log-pluricanonical sheaves: a survey of available tools(Abstract)
    Yajnaseni Dutta
    Northwestern University, USA.