Collapsing Permutation Groups

@inproceedings{KearnesCollapsingPG,
  title={Collapsing Permutation Groups},
  author={Keith A. Kearnes}
}
It is shown in [3] that any nonregular quasiprimitive permutation group is collapsing. In this paper we describe a wider class of collapsing permutation groups. Dedicated to Ivo Rosenberg on his 65th birthday