Infinity on High with a 54% decline during a post-Grammy week. The album rose to number three in its third week with 79,000 units sold. In its fourth week, the disc slipped to number four and sold 67,000 copies. "Infinity on High"s sales again fell in its fifth week, moving 58,000 copies and descending to number eight on the chart. In its sixth and last week in the top ten it fell to number nine and sold 43,000 copies. In April 2007, the album was certified Platinum by the Recording Industry Association of America (RIAA), denoting the shipment of one million copies. It
Actual infinity actu non datur" as an irrefutable principle. (G. Cantor [3, p. 174]) The number of points in a segment one ell long is its true measure. (R. Grosseteste [9, p. 96]) Actual infinity exists in number, time and quantity. (J. Baconthorpe [9, p. 96]) During the Renaissance and by early modern times the voices in favor of actual infinity were rather rare. The continuum actually consists of infinitely many indivisibles (G. Galilei [9, p. 97]) I am so in favour of actual infinity. (G.W. Leibniz [9, p. 97]) The majority agreed with the well-known quote of Gauss: I protest against