TY - JOUR AU - Fernández-Rañada, Antonio PY - 2009 DO - 10.1142/S0219887809003734 SN - 0219-8878 UR - https://hdl.handle.net/20.500.14352/44145 T2 - International Journal of Geometric Methods in Modern Physics AB - A general framework for the solutions of the constraints of pure gravity is constructed. It provides with well defined mathematical criteria to classify their solutions in four classes. Complete families of solutions are obtained in some cases. A... LA - eng M2 - 631 PB - World Scientific KW - Gauge-Theory KW - Relativity KW - Formulation KW - Variables KW - Spin. TI - General structure of the solutions of the Hamiltonian constraints of gravity TY - journal article VL - 6 ER -