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Linear Algebra/Hyperplanes
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A hyperplane H is any subspace of R^n</math> of dimension n-1. The orthogonal complement of H is a subspace of dimension 1 (i.e. a line through the origin). Assume H orthogonal is spanned by a vector v_1 then an equation of H is given by OP.v_1 = 0 where P is any point in H.