| http://www.w3.org/ns/prov#value | - A study in the plane, based on homogeneous point and line coordinates; a study of alge??braic curves and envelopes, including such topics as invari??ants, singularities, reducibility, genus, polar properties, Pascal and Brainchon theorems, and Jacobian, Hessian, and Pl??cker formulas.
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