The Twisted Cubic (a.k.a. the other Algebraic Geometry seminar) is held on Mondays at 2:30pm in T420. Everybody is welcome.

We are currently looking at stacks. A good source of information is Andrew Kresch's book-in-progress available here.

• 14th July: Daniel Chan (University of New South Wales), Resolution of non-commutative singularities (1pm)
• 30th June: Colin Ingalls, Non-commutative coordinate rings of stacks
• 23rd June: Al Kasprzyk, Generalised Gale duality with a view to toric Deligne-Mumford stacks
• 16th June: Eric Robert, The Brauer-Manin obstruction to the Hasse principle (1:30pm)
• 27th May: Basil Nanayakkara, Categories fibered in groupoids
• 1st May: Colin Ingalls, Orbifolds
• 28th April: Al Kasprzyk, The Picard group of M_{1,1}
• 21st April: Basil Nanayakkara, The stack of elliptic curves
• 14th April: Colin Ingalls, Planar conics continued
• 31st March: Al Kasprzyk, The stack of planar conics
• 17th March: Hugh Thomas, Triangles continued
• 25th February: Basil Nanayakkara, The stack of triangles
• 18th February: Al Kasprzyk, The Hilbert scheme: Mumford's example
• 11th February: Colin Ingalls, First examples of stacks
• 4th February: Hugh Thomas, The function of points continued
• 21st January: Basil Nanayakkara, The functor of points
• 14th January: Colin Ingalls, Introduction to stacks

• 7th December: Colin Ingalls, Derived categories: Examples
• 29th November: Al Kasprzyk, Derived categories: The definition
• 22nd November: Haitao Liu, Sheaves of modules
• 8th November: Al Kasprzyk, Derived categories: Motivation
• 1st November: Basil Nanayakkara, Grobner bases continuted
• 18th October: Al Kasprzyk, Separated and proper morphisms continued
• 11th October: Haitao Liu, Separated and proper morphisms
• 4th October: Al Kasprzyk, Grobner bases: Syzygies, monomial orders, and the division algorithm
• 27th September: Basil Nanayakkara, Sheaves of modules and quasi-coherent sheaves
• 20th September: Haitao Liu, Tor and Ext
• 13th September: Al Kasprzyk, Basic properties of schemes: Noetherian, finite type, and closed immersions