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Blogs about: Category O

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A hunka hunka burnin' knot homology19 comments

Ben Webster wrote 2 months ago: One of the conundra of mathematics in the age of the internet is when to start talking about your re … more →

Tags: Category Theory, Combinatorics, Homological Algebra, link homology, low-dimensional topology, quantum groups, Representation Theory

Symplectic duality slides5 comments

Ben Webster wrote 1 year ago: I’ve been too lazy to write in detail about the progress in my research (well, I am writing si … more →

Tags: Algebraic Geometry, Crazy ideas, link homology, Mathematical Physics, QFT, Talks

Gale and Koszul duality, together at last2 comments

Ben Webster wrote 1 year ago: So, in past posts, I’ve attempted to explain a bit about Gale duality and about Koszul duality … more →

Tags: Combinatorics, hyperplanes, Mathematical Physics, Papers, the arXiv

Hypertoric varieties and Koszul duality6 comments

Ben Webster wrote 1 year ago: So, on Wednesday, I gave a talk with the above title at IAS, about work in progress with Tom Braden, … more →

Tags: IAS, Talks, D-modules, Algebraic Geometry, Homological Algebra, Combinatorics, Representation Theory

Interpreting the Hecke Algebra8 comments

David Speyer wrote 1 year ago: Let denote the finite field with elements. Let denote the set of complete flags in . Such a flag is … more →

Tags: Algebraic Geometry, Combinatorics

Dispatches from the Conference on Gauge and Representation Theory4 comments

Ben Webster wrote 2 years ago: So, I got back from Scotland and my family Thanksgiving (mmm, turkey) just in time for an enormous c … more →

Tags: Conferences, D-modules, geometric Langlands, Talks

Koszul algebras and Koszul duality24 comments

Ben Webster wrote 2 years ago: One of the famous theorems that tend to crop up in undergraduate algebra classes is the Artin-Wedder … more →

Tags: Homological Algebra

Components of Springer fibers, category O, and Khovanov's "functor valued invariant of tangles"11 comments

Ben Webster wrote 2 years ago: I’ll just note at the beginning, this post is a bit of an experiment. At this point, it is abo … more →

Tags: Algebraic Geometry, Category Theory, Crazy ideas, Homological Algebra, link homology

Soergel bimodules1 comment

Ben Webster wrote 2 years ago: The next ingredient in my paper with Geordie is understanding a bit about Soergel bimodules. Soergel … more →

Tags: link homology, Papers, Soergel bimodules

John Brundan and the centers of blocks of category O8 comments

Ben Webster wrote 2 years ago: So, those of you who like the categorical approach to representation theory probably know about the … more →

Tags: Category Theory, Algebraic Topology


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