# Mathematical Sciences Research Institute

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1. # Irregular local systems working group: Local Fourier transform via quantization (Part II)

Location: MSRI: Baker Board Room
Speakers: Dmytro Arinkin (University of Wisconsin-Madison)
Updated on Apr 18, 2019 01:19 PM PDT
2. # BGMS Seminar: Non-commutative deformations, perverse coherent sheaves and semi-orthogonal decompositions.

Location: MSRI: Simons Auditorium
Speakers: Yujiro Kawamata (University of Tokyo)

We consider deformations of objects over non-commutative rings, which are more natural than commutative ones in some cases. As examples, we treat deformations of perverse coherent sheaves, and semi-orthogonal decompositions of derived categories corresponding to singularities.

Updated on Apr 18, 2019 12:24 PM PDT
3. # Elliptic Cohomology Learning Group: Construction and basic properties of E-theory

Location: MSRI: Simons Auditorium
Speakers: Lukas Brantner (Merton College, University of Oxford)
Updated on Apr 19, 2019 09:13 AM PDT
4. # The unreasonable effectiveness of non-archimedean methods in complex geometry

Location: UC Berkeley - 60 Evans Hall
Speakers: François Loeser (Université de Paris VI (Pierre et Marie Curie))
Updated on Apr 22, 2019 01:35 PM PDT

1. # Applied Invariant Theory Seminar: Tensors under congruence action & The convex hull of a space curve

Location: UC Berkeley Math (Evans Hall 891)
Speakers: Anna Seigal (University of California, Berkeley), Bernd Sturmfels (University of California, Berkeley)
Updated on Apr 18, 2019 09:45 AM PDT
2. # Graduate Student Seminar: (Logarithmic) Chow-to-Hodge cycle maps

Location: MSRI: Baker Board Room
Speakers: Charles Godfrey (University of Washington)

The cycle map from Chow groups to Hodge cohomology has a long and illustrious history. This talk will concern a variant adapted to log-smooth pairs, mapping out of the “log Chow groups” and taking values in log Hodge cohomology (using differential forms with log poles).

Updated on Apr 19, 2019 01:48 PM PDT
3. # DAG Seminar: Link homology and Hilbert schemes (University of Bonn)

Location: MSRI: Simons Auditorium
Speakers: Tina Kanstrup (Aarhus University)

One way to investigate whether two links are equivalent is to use link invariants. One of the most famous ones is Khovanov-Rozansky triply graded homology. It is defined algebraically and is notoriously hard to compute. Gorsky, Negut and Rasmussen conjectured that it can be calculated as cohomology of certain coherent sheaves on the flag Hilbert scheme. A link invariant of a similar nature has been constructed by Oblomkov and Rozansky in terms of matrix factorizations. The aim of this joint work in progress with Roman Bezrukavnikov, Alexei Oblomkov and Andrei Negut is to prove the conjecture by reformulating Oblomkov-Rozansky using work of Ben-Zvi and Nadler et al. together with work of Arkhipov and Kanstrup

Updated on Apr 17, 2019 10:25 AM PDT
4. # Student Seminar on Deformation Theory (#2): Generators in Matrix Factorization categories

Location: MSRI: Baker Board Room
Speakers: Yixuan Li (University of California, Berkeley)
Created on Apr 17, 2019 08:41 AM PDT
5. # Graduate Student Seminar - Pre-talks:

Location: MSRI: Baker Board Room
Created on Feb 22, 2019 01:36 PM PST
6. # Combinatorics Seminar: Representations of Hecke algebras and lattice-path counting

Location: UC Berkeley Math (Evans Hall 939)
Speakers: Jose Simental (University of California, Davis)

The branching rule for representations of the symmetric group tells us that, over a field of characteristic zero, the dimension of the irreducible representation indexed by a partition \lambda is given by the number of directed lattice paths from \lambda (though of as an integer vector) to the origin that stay inside the dominant Weyl chamber. Over a field of positive characteristic (or for Hecke algebras at roots of unity) this is no longer true, and the dimension of an irreducible is in general unknown. We will see, however, that there is a nice class of irreducibles (called calibrated, completely splittable or tame by different authors) whose dimension is given by the number of lattice paths to the origin that stay within a dilation of the fundamental alcove. Then we will provide an explicit resolution of these modules by Specht modules, whose dimensions are as in the characteristic zero case. This gives a representation-theoretic interpretation of combinatorial results of Filasetta, Krattenthaler and others. Based on joint work with C. Bowman and E. Norton.

Updated on Apr 25, 2019 04:37 PM PDT
7. # BGMS Seminar: Polynomial Pell equations and undecidable questions in algebraic geometry

Location: MSRI: Simons Auditorium
Speakers: János Kollár (Princeton University)

Abel initiated the  study of  the  polynomial  Pell equation $x^2-g(z)y^2=1$, where  $g(z)$ is a fixed polynomial. We are looking for solutions where $x, y, z$ are also polynomials in a variable  $t$. Then we use these results to exhibit some new  undecidable questions in complex algebraic geometry.

Updated on Apr 23, 2019 02:23 PM PDT
8. # What in the world are spectra?

Location: MSRI: Simons Auditorium
Created on Mar 04, 2019 03:30 PM PST
9. # Women at MSRI lunch

Location: MSRI: Baker Board Room
Created on Feb 13, 2019 03:50 PM PST
10. # DAG Seminar: TBA

Location: MSRI: Simons Auditorium
Speakers: Tasos Moulinos (Centre National de la Recherche Scientifique (CNRS))
Updated on Apr 24, 2019 03:29 PM PDT
11. # Commutative Algebra and Algebraic Geometry Seminar:

Location: UC Berkeley Math (Evans Hall 939)
Created on Feb 27, 2019 10:03 AM PST
12. # DAG Learning Seminar: Loop spaces and connections (IndCoh version)

Location: MSRI: Simons Auditorium
Speakers: David Nadler (University of California, Berkeley)
Updated on Apr 23, 2019 02:51 PM PDT
13. # What is a p-adic Hodge structure?

Location: MSRI: Simons Auditorium
Speakers: Laurent Fargues (Institut de Mathématiques de Jussieu)
Created on Apr 25, 2019 02:13 PM PDT
14. # Student Seminar on Deformation Theory: TBA

Location: MSRI: Baker Board Room
Speakers: Constantin Teleman (University of California, Berkeley)
Updated on Feb 28, 2019 11:54 AM PST
15. # Irregular local systems working group: Formal structures in higher dimensions.

Location: MSRI: Baker Board Room
Speakers: Benjamin Gammage (University of California, Berkeley)
Updated on Apr 25, 2019 01:40 PM PDT
16. # Algebraic Geometry colloquium: Some moduli problems arising in computer vision

Location: MSRI: Simons Auditorium
Speakers: Max Lieblich (University of Washington)
Updated on Apr 24, 2019 10:58 AM PDT
17. # BGMS Seminar: Top weight cohomology of M_{g,n}

Location: MSRI: Simons Auditorium
Speakers: Sam Payne (University of Texas)

I will discuss applications of tropical geometry to the cohomology of moduli spaces of curves, with and without marked points.  Based on joint work with Melody Chan, Carel Faber, and Soren Galatius.

Updated on Apr 23, 2019 02:23 PM PDT
18. # Elliptic Cohomology Learning Group

Location: MSRI: Simons Auditorium
Created on Mar 07, 2019 04:36 PM PST
19. # Graduate Student Seminar: A Simpson Correspondence for Abelian Varieties in Characteristic p > 0.

Location: MSRI: Baker Board Room
Speakers: Yun Hao (Freie Universität Berlin)

In the early 90s, Simpson established an equivalence between the category of local systems, and that of the semi-stable Higgs bundles whose Chern class is zero, over a smooth projective variety over the complex numbers. Such a correspondence between Higgs bundles and local systems is sometimes called the Simpson correspondence. In positive characteristic, an analogue of this result was first discovered by Ogus and Vologodsky in 2007, for bundles with nilpotent connections and Higgs fields. Later on, Groechenig, Chen and Zhu also established a full correspondence without the nilpotence conditions, for bundles over curves. In this talk, following the approach of Groechenig,  I will show that a full correspondence still holds for bundles over abelian varieties.

Updated on Apr 25, 2019 04:43 PM PDT
20. # DAG Seminar: Picard groups in chromatic homotopy theory

Location: MSRI: Simons Auditorium
Speakers: Irina Bobkova (Institute for Advanced Study)

The group of invertible objects in a symmetric monoidal category is a basic invariant of the category. The Picard group of the category of spectra is known to consist only of the sphere spectrum and its suspensions. In chromatic homotopy theory we consider the categories of spectra localized with respect to the Morava K-theories K(n) (where we first fix a prime p), and these have much richer Picard groups. I will first describe some classical results about these groups. Then I will talk about current work on understanding the Picard group of the K(2)-local category at p=2. This is based on joint
work with Beaudry, Goerss and Henn.

Updated on Apr 24, 2019 03:41 PM PDT
21. # Commutative Algebra and Algebraic Geometry Seminar:

Location: UC Berkeley Math (Evans Hall 939)
Created on Feb 27, 2019 10:03 AM PST
22. # AG Colloquium

Location: MSRI: Baker Board Room
Speakers: Jacob Tsimerman (Harvard University)
Created on Apr 17, 2019 03:45 PM PDT
23. # Irregular local systems working group:

Location: MSRI: Baker Board Room
Updated on Apr 17, 2019 03:45 PM PDT
24. # Future directions lectures

Location: MSRI: Simons Auditorium
Speakers: Bhargav Bhatt (University of Michigan)
Created on Apr 18, 2019 03:17 PM PDT
25. # Graduate Student Seminar - Pre-talks:

Location: MSRI: Baker Board Room
Created on Feb 22, 2019 01:36 PM PST
26. # BGMS Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 12:19 PM PST
27. # What in the world are spectra?

Location: MSRI: Simons Auditorium
Created on Mar 04, 2019 03:30 PM PST
28. # Future directions lectures

Location: MSRI: Simons Auditorium
Speakers: Hélène Esnault (Freie Universität Berlin)
Updated on Mar 22, 2019 04:42 PM PDT
29. # Prismatic Cohomology:

Location: MSRI: Simons Auditorium
Created on Feb 12, 2019 04:53 PM PST
30. # Women at MSRI lunch

Location: MSRI: Baker Board Room
Created on Feb 13, 2019 03:50 PM PST
31. # DAG Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:06 PM PST
32. # Commutative Algebra and Algebraic Geometry Seminar:

Location: UC Berkeley Math (Evans Hall 939)
Created on Feb 27, 2019 10:03 AM PST
33. # Future directions lectures

Location: MSRI: Simons Auditorium
Speakers: Chenyang Xu (Massachusetts Institute of Technology)
Updated on Mar 22, 2019 04:43 PM PDT
34. # DAG Learning Seminar:

Location: MSRI: Simons Auditorium
Created on Mar 06, 2019 01:27 PM PST
35. # Algebraic Geometry colloquium:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:14 PM PST
36. # Student Seminar on Deformation Theory: TBA

Location: MSRI: Baker Board Room
Speakers: Constantin Teleman (University of California, Berkeley)
Updated on Feb 28, 2019 11:55 AM PST
37. # Irregular local systems working group:

Location: MSRI: Baker Board Room
Created on Apr 11, 2019 01:53 PM PDT
38. # Future directions lectures

Location: MSRI: Simons Auditorium
Speakers: Burt Totaro (University of California, Los Angeles)
Updated on Mar 22, 2019 04:44 PM PDT
39. # BGMS Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:16 PM PST
40. # Elliptic Cohomology Learning Group

Location: MSRI: Simons Auditorium
Created on Mar 07, 2019 04:36 PM PST
41. # Graduate Student Seminar

Location: MSRI: Baker Board Room
Created on Feb 22, 2019 01:38 PM PST
42. # DAG Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:19 PM PST
43. # Graduate Student Seminar - Pre-talks:

Location: MSRI: Baker Board Room
Created on Feb 22, 2019 01:36 PM PST
44. # BGMS Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 12:19 PM PST
45. # What in the world are spectra?

Location: MSRI: Simons Auditorium
Created on Mar 04, 2019 03:30 PM PST
46. # Prismatic Cohomology:

Location: MSRI: Simons Auditorium
Created on Feb 12, 2019 04:53 PM PST
47. # Women at MSRI lunch

Location: MSRI: Baker Board Room
Created on Feb 13, 2019 03:50 PM PST
48. # DAG Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:06 PM PST
49. # Commutative Algebra and Algebraic Geometry Seminar:

Location: UC Berkeley Math (Evans Hall 939)
Created on Feb 27, 2019 10:03 AM PST
50. # DAG Learning Seminar:

Location: MSRI: Simons Auditorium
Created on Mar 06, 2019 01:27 PM PST
51. # Algebraic Geometry colloquium:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:14 PM PST
52. # Student Seminar on Deformation Theory: TBA

Location: MSRI: Baker Board Room
Speakers: Constantin Teleman (University of California, Berkeley)
Updated on Feb 28, 2019 11:55 AM PST
53. # Irregular local systems working group:

Location: MSRI: Baker Board Room
Created on Apr 11, 2019 01:53 PM PDT
54. # Chromatic DAG Seminar:

Location: MSRI: Commons Room
Created on Mar 12, 2019 09:16 AM PDT
55. # BGMS Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:16 PM PST
56. # Elliptic Cohomology Learning Group

Location: MSRI: Simons Auditorium
Created on Mar 07, 2019 04:36 PM PST
57. # Graduate Student Seminar

Location: MSRI: Baker Board Room
Created on Feb 22, 2019 01:38 PM PST
58. # DAG Seminar:

Location: MSRI: Simons Auditorium
Created on Jan 29, 2019 01:19 PM PST

1. # SeminarStudent Seminar on Deformation Theory: Geometry of superpotentials in massive 1+1 dimensional Landau Ginzburg theories

Updated on Apr 17, 2019 08:50 AM PDT
2. # SeminarAlgebraic Geometry colloquium: p-adic comparison theorems for rigid analytic spaces.

Updated on Apr 18, 2019 09:18 AM PDT
3. # SeminarDAG Learning Seminar: E_3 centers

Updated on Apr 18, 2019 09:28 AM PDT
4. # SeminarFuture directions lectures: Boundedness and Singularities

Updated on Apr 22, 2019 10:11 AM PDT
5. # SeminarCommutative Algebra and Algebraic Geometry Seminar:

Created on Feb 27, 2019 10:03 AM PST
6. # SeminarDAG Seminar: Remarks on log geometry and Hochschild homology

Updated on Apr 17, 2019 10:23 AM PDT
7. # SeminarGelfand-Tsetlin theory through the Coulomb lens

Created on Apr 22, 2019 09:06 AM PDT
8. # SeminarWomen at MSRI lunch

Created on Feb 13, 2019 03:50 PM PST
9. # SeminarPrismatic Cohomology: The \'etale comparison theorem

Updated on Apr 18, 2019 10:24 AM PDT
10. # SeminarWhat in the world are spectra? The Smash Product

Updated on Apr 19, 2019 01:36 PM PDT
11. # SeminarBGMS Seminar: Birational geometry over imperfect fields

Updated on Apr 18, 2019 12:23 PM PDT
12. # SeminarCombinatorics Seminar: Real-rooted h*-polynomials

Updated on Apr 16, 2019 11:18 AM PDT
13. # SeminarGraduate Student Seminar - Pre-talks:

Created on Feb 22, 2019 01:36 PM PST
14. # SeminarDAG Seminar: The K-theory of truncated polynomial algebras and coordinate axes

Updated on Apr 10, 2019 09:25 AM PDT
15. # SeminarGraduate Student Seminar: Applications of Bridgeland stability conditions in birational geometry

Updated on Apr 12, 2019 11:27 AM PDT
16. # SeminarApplied Invariant Theory Seminar: Buildings and one-parameter subgroups & TBA

Updated on Apr 10, 2019 11:12 AM PDT
17. # SeminarElliptic Cohomology Learning Group: Spectral formal groups and orientations

Updated on Apr 12, 2019 08:51 AM PDT
18. # SeminarBGMS Seminar: Birational geometry in large and low characteristic

Updated on Apr 11, 2019 10:58 AM PDT
19. # SeminarIrregular local systems working group: Local Fourier transform via quantization

Updated on Apr 11, 2019 02:09 PM PDT
20. # SeminarStudent Seminar on Deformation Theory: Framed formal curves

Updated on Apr 12, 2019 09:03 AM PDT
21. # SeminarAlgebraic Geometry colloquium: Reconstruction theorems for varieties of dimension at least 2

Updated on Apr 15, 2019 08:58 AM PDT
22. # SeminarDAG Learning Seminar: Group actions on categories and equivariance

Updated on Apr 11, 2019 03:28 PM PDT
23. # SeminarFuture directions lecture: Comparing various notions of coniveau and decomposition of the diagonal

Updated on Apr 09, 2019 01:50 PM PDT
24. # SeminarCommutative Algebra and Algebraic Geometry Seminar: TBA

Updated on Apr 11, 2019 04:43 PM PDT
25. # SeminarDAG Seminar: Matrix factorisations and motivic vanishing cycles

Created on Apr 10, 2019 08:55 AM PDT
26. # SeminarDAG Seminar: Motivic integration on the Hitchin fibration

Updated on Apr 10, 2019 09:31 AM PDT
27. # SeminarWomen at MSRI lunch

Created on Feb 13, 2019 03:50 PM PST
28. # SeminarPrismatic Cohomology: Perfections in mixed characteristics

Updated on Apr 11, 2019 09:58 AM PDT
29. # SeminarTame topology and O-minimal structures - non-Archimedean aspects: A tale of two towers and two period maps

Updated on Apr 11, 2019 12:01 PM PDT
30. # SeminarWhat in the world are spectra? More on ring spectra and the Tate Diagonal.

Updated on Apr 12, 2019 02:55 PM PDT
There are more then 30 past seminars. Please go to Past seminars to see all past seminars.