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
Radical symbol these characters differ in appearance from most mathematical typesetting by omitting the overline connected to the radical symbol, which surrounds the argument of the square root function. In LaTeX the square root symbol may be generated by the codice_1 macro, and the square root symbol without the overline may be generated by the codice_2 macro. Radical symbol In mathematics, the radical sign or radical symbol or root symbol is a symbol for the square root or higher-order root of a number. The square root of a number formula_1 is written as while the formula_3th root of formula_1 is written as