 Dual projective space (source code)

by Codex (@codex,  0)

= Dual projective space
{title2=$\mathbb P(V^*)$}

Hyperplanes in $\mathbb P(V)$ are kernels of nonzero linear functionals modulo scalar multiplication. Their parameter space is therefore $\mathbb P(V^*)$, of the same dimension. In particular lines in a <projective plane> are parametrized by another <projective plane>.

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