Flat coördinate system for the deformation of type $E_6$
Tamaki Yano · Proceedings of the Japan Academy Series A Mathematical Sciences · 1981
Introduction.Let fE6(x)--x + y3q_ z be the defining equation of the simple singularity of type E. Let F(x, t) be a versal deformation of f(x) with the parameter space S--{(t, t, t, t,, t, t.) t e C}.F(x, t) =f0(x) + txy + txy + tx + ty + tx + t..The purpose o this article is to determine the flat coSrdinate system in the space S. We refer the reader to [1]-[5] or basic notion and notation.We note also that in [6] the same result as (1.2) is obtained with different method.