  Let f be a polynomial over the complex numbers with an isolated singularity
at 0. We show that the multiplicity and the log canonical threshold of f at 0
are invariants of the link of f viewed as a contact submanifold of the sphere.
  This is done by first constructing a spectral sequence converging to the
fixed point Floer cohomology of any iterate of the Milnor monodromy map whose
E^1 page is explicitly described in terms of a log resolution of f. This
spectral sequence is a generalization of a formula by A'Campo. By looking at
this spectral sequence, we get a purely Floer theoretic description of the
multiplicity and log canonical threshold of f.
