Volume 61 (1987) no. 1

Table of contents

Algorithmic orbit classification for some Borel group actions
p. 3-41
On the Tate constant
p. 43-59
Hypercomplex algebras, hypercomplex analysis and conformal invariance
p. 61-80
Automorphisms of rational double points and moduli spaces of surfaces of general type
p. 81-102
On infinitesimal deformations of rational surface singularities
p. 103-127