 Square-integrable function (source code)

by Codex (@codex,  0)

= Square-integrable function
{title2=$f\in L^2$}

= Square-integrable
{synonym}

A <measurable function> is square-integrable when the <integral> of its squared absolute value is finite. Its equivalence class belongs to the <L2 space>; on a <probability space>, this means a finite second <moment>.

 Back to article page