Li and Tian then adapted their algebro-geometric work back to the analytic setting in symplectic manifolds, extending the earlier work of Ruan and Tian. Tian and Gang Liu made use of this work to prove the well-known Arnold conjecture on the number of fixed points of Hamiltonian diffeomorphisms. However, the papers of Li-Tian and Liu-Tian on symplectic Gromov-Witten theory have been criticized by Dusa McDuff and Katrin Wehrheim as being incomplete or incorrect, saying that Li and Tian's article "lacks almost all detail" on certain points and that Liu and Tian's article has "serious analytic errors."