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Colloquia & Seminars


Current Seminars

  1. EGN Postdoc and student seminar: Enumerative geometry problems inspired by physics

    Location: MSRI: Simons Auditorium
    Speakers: Arnav Tripathy (Harvard University)

    I'll expand on my five-minute talk last week, introducing the context for several problems in enumerative geometry for which I have physical predictions, including motivic Donaldson-Thomas invariants, jumping loci, BPS algebras, and/or multi-centered black hole counts. The talk will be loosely informal and may proceed according to audience interest; all are welcome. 

    Updated on Feb 16, 2018 01:03 PM PST
  2. GRTA seminar: On Tensoring with the Steinberg Representation

    Location: MSRI: Simons Auditorium
    Speakers: Daniel Nakano (University of Georgia)

    Let $G$ be a simple, simply connected algebraic group over an algebraically closed field of prime characteristic. Recent work of Kildetoft and Nakano and of Sobaje has shown close connections between two long-standing conjectures of Donkin: one on tilting modules and the lifting of projective modules for Frobenius kernels of G and another on the existence of certain filtrations of G-modules. A key question related to these conjectures is whether the tensor product of a Steinberg module with a simple module with restricted highest weight admits a good filtration. In this talk, I will survey results in this area and present new results where we verify the aforementioned good filtration statement (i.e., Steinberg tensored with restricted simple module) when (i) $p\geq 2h-4$ ($h$ is the Coxeter number), (ii) for all rank two groups, (iii) for $p\geq 3$ when the simple module corresponding to a fundamental weight and (iv) for a number of cases when the rank is less than or equal to five.

    Updated on Feb 15, 2018 11:44 AM PST
  3. GRTA seminar: The ABC of p-Cells

    Location: MSRI: Simons Auditorium
    Speakers: Lars Thorge Jensen (Max-Planck-Institut für Mathematik)

    The Hecke category is a categorification of the Hecke algebra that plays an important role in geometric representation theory. Using this categorification,
    I will introduce a positive characteristic analogue of the famous Kazhdan-Lusztig basis of the Hecke algebra, called the p-canonical or p-Kazhdan-Lusztig basis.
    If time permits, I will mention connections between
    the p-Kazhdan-Lusztig basis and the representation theory of reductive algebraic groups. Motivated by the very rich theory of Kazhdan-Lusztig cells, I study cells with respect to the p-Kazhdan-Lusztig basis. Throughout the talk, I will use SL_2 as a running example. In the
    end, I will give a complete description of p-Cells in finite type A and mention some interesting results in finite types B and C.

    Updated on Feb 16, 2018 09:00 AM PST

Upcoming Seminars

  1. EGN Polyfold Lab Meeting: Quotient of polyfolds and equivariant fundamental class

    Location: MSRI: Baker Board Room
    Speakers: Zhengyi Zhou (University of California, Berkeley)

    I will discuss how to apply polyfolds to equivariant problems. In particular, I will define the equivariant fundamental class in the polyfold setting. Combining with the polyfold construction for Gromov-Witten invariants by Hofer, Wysocki, Zehnder, this yields the construction for equivariant Gromov-Witten invariants using polyfolds. The main tool is the quotient construction for polyfolds.

    Updated on Feb 12, 2018 08:46 AM PST
  2. EGN Main Seminar: The Geometry of equivariant elliptic cohomology

    Location: MSRI: Baker Board Room
    Speakers: Nora Ganter (The University of Melbourne)

    I will give an introduction to the construction of equivariant elliptic cohomology and then talk about some recent geometric approaches to the subject.

    Created on Feb 16, 2018 03:42 PM PST
  3. UC Berkeley Colloquium: p-adic algebraic K-theory and topological cyclic homology

    Location: 60 Evans Hall
    Speakers: Akhil Mathew (University of Chicago)

    http://events.berkeley.edu/index.php/calendar/sn/math.html?event_ID=115325

    Algebraic K-theory is a basic invariant of rings connected to deep phenomena in arithmetic, geometry, and topology. When one works with the p-adic K-theory of p-adic rings, the theory of trace maps and the apparatus of topological cyclic homology (TC) is often a highly effective approximation used in many computations. The theory TC, while more conceptually involved than K-theory, is often easier to work with. In this talk, I will give a gentle introduction to these theories and explain their applications to some new structural results in K-theory.

    Updated on Feb 16, 2018 09:42 AM PST
  4. EGN symplectic geometry and mirror symmetry seminar: Lagrangian tori in CP^2

    Location: 748 Evans Hall
    Speakers: Renato Ferreira de Velloso Vianna (Center for Mathematical Sciences)

    We will present an infinite series of monotone Lagrangian tori in CP^2, which arise as fibres of almost toric fibrations (ATFs). We show how to distinguish these tori up to the action of Symp(CP^2). Time permiting, based on a joint work with Tonkonog and Shelukhin, we will present (a 4-dimensional version) of an invariant for any Lagrangian, and use it to determine the space of almost toric fibres modulo the action of Symp(CP^2).

    Created on Feb 15, 2018 08:50 AM PST
  5. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  6. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  7. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  8. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  9. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  10. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Speakers: Monica Vazirani (University of California, Davis)
    Created on Jan 24, 2018 10:41 AM PST
  11. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  12. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  13. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  14. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  15. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  16. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  17. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Speakers: Greta Panova (University of Pennsylvania)
    Created on Jan 24, 2018 10:42 AM PST
  18. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  19. EGN Math-Physics seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:22 PM PST
  20. GRTA seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:29 PM PST
  21. GRTA seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:30 PM PST
  22. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  23. EGN Main Seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:40 PM PST
  24. EGN Main Seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:41 PM PST
  25. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Speakers: Aner Shalev (The Hebrew University of Jerusalem)
    Created on Jan 24, 2018 10:43 AM PST
  26. EGN Open GW seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:55 PM PST
  27. GRTA seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:29 PM PST
  28. GRTA seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:30 PM PST
  29. Chern Lectures:

    Speakers: Martin Hairer (University of Warwick)

    https://math.berkeley.edu/about/events/lectures/chern

    Created on Jan 24, 2018 10:31 AM PST
  30. Chern Lectures

    Speakers: Martin Hairer (University of Warwick)

    https://math.berkeley.edu/about/events/lectures/chern

    Created on Jan 24, 2018 10:32 AM PST
  31. Chern Lectures

    Speakers: Martin Hairer (University of Warwick)

    https://math.berkeley.edu/about/events/lectures/chern

    Created on Jan 24, 2018 10:32 AM PST
  32. Chern Lectures

    Speakers: Martin Hairer (University of Warwick)

    https://math.berkeley.edu/about/events/lectures/chern

    Created on Jan 24, 2018 10:32 AM PST
  33. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  34. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  35. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  36. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  37. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  38. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  39. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  40. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  41. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  42. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  43. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  44. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  45. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Speakers: Sylvie Corteel (Université de Paris VII (Denis Diderot))
    Created on Jan 24, 2018 10:43 AM PST
  46. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  47. EGN Math-Physics seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:22 PM PST
  48. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  49. EGN Main Seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:40 PM PST
  50. EGN Main Seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:41 PM PST
  51. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Speakers: Dusa McDuff (Barnard College)
    Created on Jan 24, 2018 10:44 AM PST
  52. EGN Open GW seminar:

    Location: MSRI: Baker Board Room
    Created on Feb 05, 2018 03:55 PM PST
  53. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  54. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  55. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  56. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  57. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  58. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  59. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  60. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  61. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  62. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  63. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  64. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  65. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  66. UC Berkeley Colloquium:

    Location: 60 Evans Hall
    Created on Jan 24, 2018 10:46 AM PST
  67. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  68. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  69. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  70. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  71. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  72. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  73. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  74. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  75. EGN Math-Physics seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:22 PM PST
  76. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  77. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  78. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  79. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  80. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  81. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST
  82. Seminar Sequence

    Location: MSRI: Simons Auditorium
    Created on Aug 31, 2017 03:27 PM PDT
  83. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:29 PM PST
  84. GRTA seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:30 PM PST
  85. EGN Polyfold Lab Meeting:

    Location: MSRI: Baker Board Room
    Created on Feb 06, 2018 08:50 AM PST
  86. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:40 PM PST
  87. EGN Main Seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:41 PM PST
  88. EGN Open GW seminar:

    Location: MSRI: Simons Auditorium
    Created on Feb 05, 2018 03:55 PM PST

Past Seminars

  1. Seminar 5-Minute Talks

    Updated on Feb 08, 2018 01:48 PM PST
  2. Seminar 5-Minute Talks

    Updated on Feb 08, 2018 01:47 PM PST
  3. Seminar 5-Minute Talks

    Updated on Feb 08, 2018 01:47 PM PST
There are more then 30 past seminars. Please go to Past seminars to see all past seminars.