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Conferences and workshops

  • Invited

    1. Anyonic quantum permutation groups
      International Conference on Spectral and Approximation Theory (ICSAT-2023), Cochin University of Science And Technology, Kerala on 27 November, 2023.

    2. Braided quantum symmetries of (classical and quantum) spaces
      Conference on Functional Analysis and Related Topics, Indian Institute of Technology Bombay on 22 February, 2023.

    3. Braided free unitary quantum groups
      Rencontre 2022 de l'ANR ANCG, Cabourg on 8 November, 2022.

    4. Braided quantum symmetries of classical and quantum spaces
      A conference on ergodic theory and von Neumann algebra (online), National Institute of Science Education and Research, India on 6 August, 2022.

    5. On braided compact quantum groups
      Virtual Math Fest 2020, Institute of Mathematical Sciences Chennai, India on 20 July, 2020.

    6. Quantum E(2) groups and beyond
      IISER-NISER Mathematics Webmeet 2020 (Operator Algebra/Theory session), Indian Institute of Science Education and Research Mohali, India on 27 July, 2020.

    7. Quantum E(2) groups for complex deformation parameter
      Conference on Functional Analysis (CFA@IITB 2019), Indian Institute of Technology Bombay, India on 28 October, 2019.

    8. Braided quantum E(2) groups
      Recent Advances in Operator Theory and Operator Algebras 2018 (OTOA 2018), Indian Statistical Institute Bangalore, India on 24 December, 2018.

    9. Quantum symmetries of the twisted tensor products of C*-algebras
      "Noncommutative Geometry: Physical and Mathematical Aspects of Quantum Space- Time and Matter", SNBNCBS, Kolkata, India on 29 November, 2018.

    10. Braided compact quantum groups
      2nd Inter IISER-NISER Math Meet 2018 (Analysis session), Indian Institute of Science Education and Research Bhopal, India on 7 July, 2018.

    11. Braided quantum group structure on quantum plane
      XXXVI Workshop on Geometric Methods in Physics, Białowież (in the S. Twareque Ali Memorial Session), Poland on 6 July, 2017.

    12. Braided C*-quantum groups and quantum plane
      Non-Commutative Analysis, Institute of Mathematical Sciences Chennai, India on 7 February, 2017.

    13. Braided free orthogonal quantum groups
      Recent Advances in Operator Theory and Operator Algebras 2016 (OTOA 2016), Indian Statistical Institute Bangalore, India on 19 December, 2016.

    14. Intrinsic groups of double crossed products
      Workshop on Dynamical Systems and Operator Algebras, University of Ottawa, Canada on 31 May, 2016.

    15. Duality for convex monoids
      Winter meeting of the Canadian Mathematical Society in the Operator algebra session, Montreal, Canada on 7 December, 2015.

    16. Faithful actions of locally compact quantum groups on classical spaces
      Banach Algebras and Applications and Retrospective Meeting for the 2014 Thematic Program on Abstract Harmonic Analysis, Banach and Operator Algebras, Fields Institute, Canada on 8 August, 2015.

    17. Slices of braided multiplicative unitaries
      Summer meeting of the Canadian Mathematical Society in the C*-algebra session, Charlottetown, Canada on 6 June, 2015.

    18. Quasitriangular quantum group twisted tensor product of C*-algebras
      Fields workshop on Recent Developments in Quantum Groups, Operator Algebras and Applications, University of Ottawa, Canada on 6 February, 2015.

    19. The Haagerup property of the generalised Drinfeld double
      Workshop on Operator Spaces, Locally Compact Quantum Groups and Amenability (Thematic Program on Abstract Harmonic Analysis, Banach and Operator Algebras), Fields Institute Toronto, Canada on 29 May, 2014.

    20. Quantum group with projection
      Quantum Geometry and matter, SISSA-Trieste, Italy on 10 April, 2013.

    21. Quasitriangular quantum groups and coaction category
      10th Geometry and Physics Conference "Quantum Geometry", Crete, Greece on 7 August, 2012.

    22. Homomorphisms of Quantum Groups
      Operator Algebras and Quantum Groups - conference in honour of Stanisław Lech Woronowicz's seventieth birthday, Warsaw, Poland on 20 September, 2011.


  • Contributed

    1. Braided quantum symmetries of classical and quantum spaces
      Noncommutative harmonic analysis and quantum groups, Będlewo, Poland on 13 September, 2022.

    2. Homogeneous quantum symmetries of finite quantum spaces over the circle group
      Quantum Groups and Algebraic Quantum Field Theory, A special session of the conference International Workshop on Operator Theory and its Applications (IWOTA), Lancaster, UK on 20 August, 2021.

    3. Quantum symmetries of the twisted tensor products of C*-algebras
      18th Workshop: Noncommutative Probability, Operator Algebras, Random Matrices and Related Topics, with Applications, Będlewo, Poland on 18 July, 2018.

    4. Braided commutative representations of C*-algebras
      Canadian Operator Algebra Symposium (COSy), Fields Institute Toronto, Canada on 23 June, 2014.

    5. C*-Quantum group with projection (Poster)
      SFB-Workshop Groups, Dynamical Systems and C*-Algebras, Münster, Germany on 21 August, 2013.

    6. Quasitriangular C*-quantum groups and braiding (Poster)
      6th European congress of Mathematics, Krakow, Poland during 3-4 July, 2012.

    7. Semidirect product of C*-Quantum Groups
      Master class on Quantum Groups, Copenhagen, Denmark on 8 March, 2012.

    8. Homomorphisms of Quantum Groups
      7th International Conference Quantum Theory and Symmetries, Prague, Czech Republic on 11 August, 2011.

    9. Homomorphisms of Quantum Groups
      XXX Workshop on Geometric Methods in Physics, Białowież, Poland on 26 June, 2011.


Talks at the outreach events
  • Symmetry and groups
    Outreach seminar, School of Mathematical Sciences, NISER on 16 February, 2024.

  • An excursion to quantum permutations
    Seminar series organised for summer students, School of Physical Sciences, NISER on 6 July, 2022.

  • A tale of a rotating needle of length one,
    Outreach talk NISER on 8 April, 2022.


Seminars and colloquia
    1. Anyonic quantum permutation groups
      Functional Analysis seminar, University of California San Diego on 30 January, 2024.

    2. Ordinary and braided quantum symmetries of finite graphs
      Stat-Math Unit, Indian Statistical Institute Bangalore on 23 November, 2023.

    3. Anyonic quantum symmetries of finite spaces
      Stat-Math Unit, Indian Statistical Institute Kolkata on 19 July, 2023.

    4. Braided quantum symmetries of graph C*-algebras
      North Atlantic Noncommutative Geometry Seminar (online), on 5 April, 2023.

    5. Quantum symmetries of finite spaces
      Mathematics Online Seminar Series (MOSS), Indian Institute of Science Education and Research Berhampur on 1 April, 2023.

    6. Quantum symmetries of finite spaces
      Department of Mathematics and Statistics seminar, Indian Institute of Science Education and Research Kolkata on 27 February, 2023.

    7. Quantum symmetries of finite spaces
      Mathematics and Statistics colloquium, Indian Institute of Technology Kanpur on 2 February, 2023.

    8. Braided quantum symmetries of classical and quantum spaces
      Stat-Math Unit (online seminar), Indian Statistical Institute Delhi on 26 October, 2022.

    9. Braided quantum symmetries of finite sets
      Functional Analysis Seminar, Laboratoire de mathématiques de Besançon on 20 September, 2022.

    10. Braided quantum symmetries of graph C*-algebras
      APRG Seminar, Indian Institute of Science Bangalore on 8 June, 2022.

    11. Braided quantum symmetries of finite spaces
      Mathematics Colloquium, TIFR Centre For Applicable Mathematics Bangalore on 7 June, 2022.

    12. Braided quantum symmetries of graph C*-algebras
      Virtual quantum symmetry seminar, Department of Mathematics, Ohio State University, USA on 8 March, 2022.

    13. Homogeneous quantum symmetries of finite spaces over the circle group
      APRG Seminar (online), Indian Institute of Science Bangalore on 17 November, 2021.

    14. Contraction and bosonisation
      Tokyo-Kyoto Joint Online Operator Algebra Seminar on 12 November, 2020.

    15. Compact quantum groups and their semidirect products
      Topological Groups (online), University of Hawai`i , USA on 29 September 29, 2020.

    16. Quantum group contraction and bosonisation
      Webinars on Operator Theory and Operator Algebras on 16 September, 2020.

    17. Braided compact quantum groups: motivation and examples
      Department of Mathematics and Statistics, Indian Institute of Science Education and Research Kolkata on 22 July, 2019.

    18. Braided Quantum Groups in C*-algebraic framework
      School of Mathematics, Tata Institute of Fundamental Research Mumbai on 24 May, 2019.

    19. Quantum plane and duality
      Department of Mathematics, Indian Institute of Technology Bombay on 22 February, 2019.

    20. Symmetries and Quantum Groups
      Center for Theoretical Studies, Indian Institute of Technology Kharagpur on 26 November, 2018.

    21. From CCR to quantum groups
      Center for Theoretical Studies, Indian Institute of Technology Kharagpur on 24 August, 2018.

    22. Semidirect product of groups and beyond
      Department of Mathematics, Indian Institute of Technology Guwahati on 23 May, 2018.

    23. Semidirect product of groups and beyond
      The Institute of Mathematical Sciences Chennai on 19 March, 2018.

    24. Quantum Symmetries of twisted tensor product of C*- algebras
      Stat-Math Unit, Indian Statistical Institute Kolkata on 2 February, 2018.

    25. Semidirect product of compact quantum groups
      Department of Mathematics, Indian Institute of Science Education and Research Mohali on 12 August, 2016.

    26. Braided quantum SU(2) groups
      Stat-Math Unit, Indian Statistical Institute Delhi on 8 August, 2016.

    27. Multiplicative unitaries for locally compact groups
      Stat-Math Unit, Indian Statistical Institute, Kolkata on 18 July, 2016.

    28. Braided quantum SU(2) groups
      Operator algebra seminar, Fields Institute Toronto, Canada on 7 June, 2016.

    29. Semidirect product of compact quantum groups
      Department of Mathematics, Indian Institute of Technology Madras on 10 May, 2016.

    30. Braided quantum SU(2) groups
      Oberseminar AG-Speicher, Faculty of Mathematics, Universität Saarlandes, Germany on 16 February, 2016.

    31. Landstad-Vaes theory for locally compact quantum groups
      Mathematics Institut Georg-August-Universität Göttingen, Germany on 10 February, 2016.

    32. Quantum group-twisted tensor product of C*-algebras
      Analysis Seminar, University of Ottawa, Canada on 13 January, 2016.

    33. Faithful actions of locally compact quantum groups on spaces
      Department of Mathematics and Statistics, University of New Brunswick, Canada on 3 December, 2015.

    34. Braided C*-quantum groups
      The Institute of Mathematical Sciences Chennai, November 9, 2015.

    35. Landstad-Vaes theory for locally compact quantum groups
      Department of Mathematics, Indian Institute of Science Bangalore on 6 November, 2015.

    36. Faithful actions of locally compact quantum groups on classical spaces
      Department of Mathematics, Indian Institute of Science Education and Research Bhopal on 15 October, 2015.

    37. The Drinfeld double for C*-algebraic quantum groups
      Stat-Math Unit, Indian Statistical Institute, Kolkata on 13 March, 2015.

    38. From Hopf algebras to locally compact quantum groups
      Logic seminar, Department of Mathematics and Statistics, University of Ottawa, Canada on 27 February, 2015.

    39. Braided quantum SU(2) groups
      Tata Institute of Fundamental Research, Mumbai on 28 November, 2014.

    40. A brief introduction to braided multiplicative unitaries
      Department of Mathematics, Indian Institute of Technology, Delhi on 17 October, 2014.

    41. The Haagerup property of the Drinfeld doubles
      School of Physical Sciences, Jawaharlal Nehru University, India on 16 October, 2014.

    42. Quantum group-twisted tensor product of C*-algebras
      Department of Mathematics and Statistics, University of Ottawa, Canada on 4 March, 2014.

    43. Quantum group-twisted tensor product of C*-algebras
      Department of Pure Mathematics, University of Waterloo, Canada, on 20 February, 2014.

    44. Quantum group-twisted tensor product of C*-algebras, Operator algebra seminar, Fields Institute Toronto, Canada on 6 February, 2014.

    45. Twisted tensor product of C*-algebras
      Stat-Math Unit, Indian Statistical Institute Delhi, India on 25 October, 2013.

    46. Associative twisted tensor product of C*-algebras
      Department of Mathematics, Shiv Nadar University, India on 10 October, 2013.

    47. From locally compact groups to C*-quantum groups: multiplicative unitary approach
      Department of Mathematics, Indian Institute of Technology Ropar on 9 October, 2013.

    48. On braided multiplicative unitaries
      Department of Mathematical Methods in Physics, University of Warsaw, Poland on 23 May, 2013.

    49. Quantum groups with a projection
      Mathematical Institute of the Polish Academy of Sciences Warsaw, Poland on 20 May, 2013.

    50. Twisted tensor product of C*-algebras
      Department of Mathematics, Indian Institute of Science Education and Research Kolkata on 3 April, 2013.

    51. On braided multiplicative unitaries
      Stat-Math Unit, Indian Statistical Institute Kolkata on 20 March, 2013.

    52. On canonical commutation relation
      Department of Mathematics, Indian Institute of Technology Guwahati on 19 March, 2013.

    53. Twisted tensor product of C*-algebras
      Graduate School of Mathematical Sciences, The University of Tokyo, Japan on 15 March, 2013.

    54. Universal Coefficient Theorems and assembly maps in KK-theory
      Oberseminar AG-Meyer, Mathematics Institut, Georg-August-Universität Göttingen, Germany on 29 November, 2012.

    55. Category of locally compact quantum groups
      Chennai Mathematical Institute, India on 20 December, 2011.

    56. An overview of Grothendieck group construction and its application
      Indian Institute of Technology Guwahati on 13 October, 2011.

    57. Homomorphisms of quantum groups
      Colloquium of Gk 1493: "Mathematische Strukturen in der modernen Quantenphysik'', Mathematics Institute, Georg-August-Universität Göttingen, Germany on 26 May, 2011.

    58. Homomorphisms of quantum groups
      Department of Mathematical Methods in Physics, University of Warsaw, Poland on 17 March, 2011.

    59. Morphisms of quantum groups via linking unitaries
      Indian Institute of Technology Guwahati on 7 October, 2010.

    60. Morphisms of quantum groups via linking unitaries,
      Seminar talk at 7th Focused Semester: Quantum groups, Université de Caen, France on 16 September, 2010.