%0 Journal Article %T The canonical pencils on Horikawa surfaces %A Denis Auroux %J Mathematics %D 2006 %I arXiv %R 10.2140/gt.2006.10.2173 %X We calculate the monodromies of the canonical Lefschetz pencils on a pair of homeomorphic Horikawa surfaces. We show in particular that the (pluri)canonical pencils on these surfaces have the same monodromy groups, and are related by a "partial twisting" operation. %U http://arxiv.org/abs/math/0605692v2