Hello! I am interested in knowing the existing relation between the ADM Formalism and the Wheeler-deWitt Equation. From the articles and lectures I was read, I understand that ADM formulation is the Hamiltonian formulation of General Relativity at classical level. Then, the Hamiltonian is quantized converting the metric and the momentums in the correct operators, and the Wheeler-deWitt equation is then Hψ=0 with H the quantized Hamiltonian. I am right or wrong? I would be grateful if you can give me an answer. PS: If I have some mistakes, please excuse me, english is not my born language and I am learning it. Thanks.