Infinity symbol Infinity symbol The infinity symbol (sometimes called the lemniscate) is a mathematical symbol representing the concept of infinity. The shape of a sideways figure eight has a long pedigree; for instance, it appears in the cross of Saint Boniface, wrapped around the bars of a Latin cross. However, John Wallis is credited with introducing the infinity symbol with its mathematical meaning in 1655, in his "De sectionibus conicis". Wallis did not explain his choice of this symbol, but it has been conjectured to be a variant form of a Roman numeral for 1,000 (originally CIƆ, also CƆ), which was sometimes
Sideways bike bike to bike. Some sideways bicycles have them positioned in the same way that a normal bike does; however, there are some that are placed such that the rider must sit not facing in the direction of movement but perpendicular to it. This means that turning is easier and more elegant; however, visibility is impaired as the rider must turn his or her neck all the time. Sideways bikes are single speed, which means that gears have not yet been worked into the complex design of transmission of power from the cranks to the back wheel. Since it pivots, a