Karshon is the author of the monographs
Periodic Hamiltonian flows on four dimensional manifolds (Memoirs of the American Mathematical Society 672, 1999), which completely classified the
Hamiltonian actions of the
circle group on four-dimensional
compact manifolds. With
Viktor Ginzburg and
Victor Guillemin, she also wrote
Moment maps, cobordisms, and Hamiltonian group actions (Mathematical Surveys and Monographs 98, American Mathematical Society, 2002), which surveys "symplectic geometry in the context of equivariant cobordism". ==Awards and honours==