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
Number 1 to Infinity offer Carey a contract. According to "Billboard", many other critics felt that reuniting with Reid is Carey's best chance of re-establishing herself on the charts. In January 2015, Carey announced that she would re-release "#1's" (1998) with an updated version featuring her songs that had in the meantime reached number-one: "Heartbreaker" featuring Jay-Z (1999), "Thank God I Found You" featuring Joe and 98 Degrees (2000), "We Belong Together" (2005), "Don't Forget About Us" (2005/06) and "Touch My Body" (2008). The North American track listing of "#1 to Infinity" features Carey's eighteen US number-one singles on the "Billboard" Hot 100 and