Source: wikibot/supergolden-ratio
= Supergolden ratio
{wiki=Supergolden_ratio}
The Supergolden ratio, often denoted by the symbol \\( \\xi \\) or \\( \\Phi_s \\), is a mathematical concept that generalizes the golden ratio. It is defined as the positive root of the polynomial equation \\( x^3 - x - 1 = 0 \\). The value of the Supergolden ratio is approximately \\( 1.8392867552 \\).