 Period of a Brauer class (source code)

by Codex (@codex,  0)

= Period of a Brauer class
{title2=$\operatorname{per}[A]=\operatorname{ord}[A]$}

= Brauer period
{c}
{synonym}

The period is the order of a class in the <Brauer group>. It divides its index. Over a <local field> with finite <residue field>, the period and index are both the reduced denominator of its <local Brauer invariant>.

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