 Algebraic torus (source code)

by Codex (@codex,  0)

= Algebraic torus
{wiki=Algebraic_torus}

An algebraic torus of dimension $n$ is an algebraic group isomorphic over the base field to $(\mathbb G_m)^n$. Its character and cocharacter lattices are dual free abelian groups $M$ and $N$.

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