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Reference.org
Logarithmically convex function
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, a <a href="/facts/Function_(mathematics)/CdReEKCh">function</a> <i>f</i> is logarithmically convex or superconvex if log ∘ f {\displaystyle {\log }\circ f} , the <a href="/facts/Function_composition/r5Pvnmth">composition</a> of the <a href="/facts/Logarithm/QeXaV97q">logarithm</a> with <i>f</i>, is itself a <a href="/facts/Convex_function/IbzG5SLF">convex function</a>. </p>