%0 Journal Article %T The Rotation Class of a Flow %A Alex Clark %J Mathematics %D 2000 %I arXiv %X Generalizing a construction of A. Weil, we introduce a topological invariant for flows on compact, connected, finite dimensional, abelian, topological groups. We calculate this invariant for some examples and compare the invariant with other flow invariants. %U http://arxiv.org/abs/math/0010325v1