Woensdag 17 december 2003
Vanaf half 11 is er koffie en chocola.
||Peter Russell (Montreal)
||On Lüroth type problems
||11:00 - 12:00
||CK N4 (N3045)
The nature of subfields of rational function fields has long fascinated
mathematicians, and their study has motivated many developments in classical
More recently, subrings of polynomial rings have been investigated in
connection with thorny problems in ``affine algebraic geometry'',
such as the cancellation problem, or linearization for algebraic group actions
on affine spaces.
I will discuss some progress, and a lot of non-progress, on these Lüroth
type problems, and, in general terms, the algebraic geometry behind them.