 Algebraic torus character (source code)

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= Algebraic torus character
{title2=$\chi^m$}

= Character of an algebraic torus
{synonym}

= Characters of an algebraic torus
{synonym}

An algebraic torus character is a morphism of algebraic groups $T\to\mathbb G_m$. For a split torus with character lattice $M$, these are precisely the Laurent monomials $\chi^m$, with $\chi^{m+m'}=\chi^m\chi^{m'}$.

// Target: algebra.bigb

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