14 Feb 2008; Mat-Nat Faculty (UiTø), room A228. Thursday 12:15-14:00
"Differential invariants of the 2D conformal algebra action".
In this lecture we discuss canonical and a deformed representation of the 2D conformal Lie algebra. We lift action to infinite jets and find all invariants, i.e. differential invariants of the 2D conformal algebra action. Moreover the structure of the algebra of differential invariants will be described. Complexification and realification plays an essential role in this work.