Bilinear forms and hermitian forms for singularities: a survey

Abstract

The paper collects different approaches and viewpoints on bilinear forms and hermitian forms around isolated hypersurface singularities. It gives the relations between them in precise formulas. It does not contain new results.

21 pages. 1 figure. The paper is an english translation of a french article which is cited below. I thank Daniel Barlet for the allowance to put the english version onto the arXiv