Picard-Lefschetz Monodromy Groups of Quadratic Hypersurfaces
  We study the topology of the space of affine hyperplanes $L \subset \CC^n$ which are in general position with respect to a given generic quadratic hypersurface $A$, and calculate the monodromy action of the fundamental group of this space on the relative homology groups $H_*(\CC^n, A \cup L)$ associated with such hyperplanes. 
Daodao Yang
math.AG math.AT