Meetings of the COW seminar in 19992000
Details of the activities of the COW this year may be found on the
COW
homepage.

Oxford, Thursday 14th October 1999
2:00 Nigel Hitchin (Oxford): The geometry of 3forms and threefolds
with trivial canonical bundle
4:15 Yura Zarhin (Moscow): Hyperelliptic Jacobians without complex
multiplication

Cambridge, Thursday 28th October 1999
2:00 Mark Gross (Warwick): Topological mirror symmetry
4:00 Jan Wierzba (Cambridge): Contractions from symplectic
varieties

London, Thursday 11th November 1999
2:00 Nick ShepherdBarron (Cambridge): Isomorphism classes in local
moduli spaces
3:10 Paul Seidel (Princeton): Floer cohomology and the PicardLefschetz
formula
4:30 Alexei Skorobogatov (London): Rational points on diagonal cubic
surfaces

Bath, Thursday 25th November 1999
2:15 Dominic Joyce (Oxford): A new construction of compact
8manifolds with holonomy Spin(7)
4:00 Peter SwinnertonDyer (Cambridge): Weak Approximation and
Requivalence on cubic surfaces

Nottingham, Thursday 27th January 2000
2:00 W. CrawleyBoevey (Leeds): Quivers and related
singularities
3:15 Keum JongHae (Seoul): How to compute the
automorphism groups of K3 surfaces

Oxford, Thursday 17th February 2000
3:00 Gavin Brown (Oxford): Mori flips by explicit deformation of
Gorenstein singularities
5:00 Shigeru Mukai (Nagoya): Euler numbers and the geometry of the
Verlinde formulas

London, Thursday 9th March 2000
2:00 Simon Donaldson (London): Theta functions and the blowup
formula for instanton invariants
4:00 Rob de Jeu (Durham): The rank conjecture on the homology
of general linear groups

COW  Calf Workshop, Warwick, 28th30th March 2000

Tuesday 28th March
2:00 Miles Reid (Warwick): Varieties and rings
4:00 Gavin Brown (Oxford): Other people's Gorenstein deformations

Wednesday 29th March
10:00 Christian Pauly (Nice): Dualities between generalized theta
functions
12:00 Alastair Craw (Warwick): The McKay correspondence for
AHilb(C³)
2:00 Alastair King (Bath): GHilb or not GHilb, that is the
question
4:00 Balazs Szendroi (Warwick): Torelli problems with group
action

Thursday 30th March
11:00 Gregory Sankaran (Bath): Constructing and compactifying
moduli spaces of abelian surfaces
12.30 Umar Salam (Cambridge): Threefold contractions and
fourfold flops
2.30 Paul Hacking (Cambridge): Moduli spaces of log surfaces
and Severi varieties

Oxford, Thursday 19th May 2000
2:00 Miles Reid (Warwick): Rings and varieties
4.00 Mark Gross (Warwick): Moduli of abelian varieties

Manchester, Tuesday 30th May 2000
1:00 Terry Wall (Liverpool): Local decomposition of the polar curve
of a plane curve
2.30 Slava Nikulin (Liverpool): Interesting automorphism groups of
K3 surfaces
4.00 Gavin Brown (Oxford): Explicit Mori flips of type A
COW page
gks1@maths.bath.ac.uk