Infinity symbol in bookbinding to indicate that a book is printed on acid-free paper and will therefore be long-lasting. In modern mysticism, the infinity symbol has become identified with a variation of the ouroboros, an ancient image of a snake eating its own tail that has also come to symbolize the infinite, and the ouroboros is sometimes drawn in figure-eight form to reflect this identification, rather than in its more traditional circular form. In the works of Vladimir Nabokov, including "The Gift" and "Pale Fire", the figure-eight shape is used symbolically to refer to the Möbius strip and the infinite, for instance
Infinity on High ten. In its 31st chart week it broke into the top ten again where it remained for another six weeks in a row, accumulating a total of thirteen weeks in the top ten. The CD was certified Double Platinum by the Australian Recording Industry Association (ARIA), denoting shipments of 140,000 copies. "Infinity on High" debuted at number one in New Zealand, and remained at the top position for six consecutive weeks, logging a total of thirty-seven chart weeks, making it the fifth longest chart sitter on the New Zealand charts in 2007. After marking its first twelve weeks in the