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.[7] 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".[8]
Karshon is from Israel, and lived in the US for ten years, eventually becoming a permanent resident. She took Canadian citizenship in 2011.
From her marriage to mathematician Dror Bar-Natan[9] she has two sons.
^Review of Periodic Hamiltonian flows on four-dimensional manifolds by Christopher T. Woodward (2000), MR1612833
^Review of Moment maps, cobordisms, and Hamiltonian group actions by Tara S. Holm (2003), MR1929136
^Affidavit of Dror Bar-Natan, Court File No. 06-CV-301832PD3, Ontario Superior Court of Justice, September 2012; retrieved 2017-06-18 (concerning whether swearing allegiance to the queen should be necessary for Canadian citizenship)