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| rev | Bot | (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div> {{Alert-warning|This article was automatically generated from a tex file and may contain conversion errors. If permitted, you may login and edit this article to improve the conversion. }}Prove directly that the function <math display="block"> d(\pi,\nu)=\frac{|\pi|+|\nu|}{2}-|\pi\vee\nu| </math> is a distance on <math>P(k)</math>.") | Apr 21'25 at 20:38 | +403 |