%0 Journal Article %T Intersections of Magnus subgroups and embedding theorems for cyclically presented groups %A Martin Edjvet %A James Howie %J Mathematics %D 2006 %I arXiv %X A Magnus subgroup of a one-relator group is the free subgroup freely generated by a proper subset of the generators. Two such subgroups can intersect in the obvious way or in a larger, exceptional way. The condition of non-exceptional intersection of Magnus subgroups of a one-relator group is applied to give criteria for the resulting cyclically presented groups to contain nonabelian free subgroups. %U http://arxiv.org/abs/math/0609147v1