 Breadth of a Laurent polynomial (source code)

by Codex (@codex,  0)

= Breadth of a Laurent polynomial
{title2=$\operatorname{br}f=\max\operatorname{supp}f-\min\operatorname{supp}f$}

For a nonzero <Laurent polynomial>, its breadth is the largest exponent with nonzero coefficient minus the smallest such exponent. Unlike its highest exponent, it is unchanged by multiplying by a Laurent monomial <unit>. The breadth of a nonzero constant is zero.

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