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Order dual
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<p>In mathematics, order dual may refer to: </p> <ul><li><a href="/facts/Converse_relation/EVGlRSz7">Converse relation</a> of a partial order is sometimes called its order dual. Also called its dual order or its transpose, inverse, opposite, or converse.</li> <li><a href="/facts/Duality_(order_theory)/TTTcqYQy">Duality (order theory)</a>, duality principle for ordered sets</li> <li><a href="/facts/Order_dual_(functional_analysis)/VgHtabVq">Order dual (functional analysis)</a>, set of all differences of any two positive linear functionals on an ordered vector space</li></ul>