The book reports on recent work by the authors on the bifurcation
structure of singular points of planar vector fields whose linear parts
are nilpotent. The bifurcation diagrams of the most important
codimension-three cases are studied in detail. The results presented
reach the limits of what is currently known on the bifurcation theory of
planar vector fields. While the treatment is geometric, special
analytical tools using abelian integrals are needed, and are explicitly
developed. The rescaling and normalization methods are improved for
application here. The reader is assumed to be familiar with the elements
of Bifurcation and Dynamical Systems Theory. The book is addressed to
researchers and graduate students working in Ordinary Differential
Equations and Dynamical Systems, as well as anyone modelling complex
multiparametric phenomena.