hh testhahachurehacksawhacksaw framehad we expressed a as xhadamard conjecturehadamard inequalityhadamard multiplication theoremhadehahn banach theoremhalfhalf anglehalf angle formulahalf angle substituitonhalf closedhalf infinitehalf infinite intervalhalf intervalhalf lifehalf linehalf multidimensional intervalhalf openhalf open intervalhalf plaidhalf planehalf rangehalf rotationhalf spacehalt statehalting problemhalvehalvedhalvingham sandwich theoremhamel basishamilton canonical equationhamilton canonical equationshamilton cayley theoremhamiltonianhamiltonian circuithamiltonian functionhamiltonian graphhamiltonian mechanicshandhand heldhand nuthand rammerhand reame