Theory Pages ============================ In these pages we provide detailed theory for the various simulation capacities in |pftogs|. .. toctree:: :maxdepth: 1 mathematical_formulation_of_gw mathematical_formulation_of_toil_ims mathematical_formulation_of_black_oil mathematical_formulation_of_stl mathematical_formulation_of_simple_tl solving_the_flow_equations fluid_properties soil_comp char_curves_smoother well_model