Proposition Infinity (generally referred to as "Proposition 8"), which banned same-sex marriage in California in November 2008. The title of the episode is derived from Proposition 8, turning the 8 sideways to create the symbol for infinity (∞), hence "Proposition ∞". Though the episode satirizes arguments for same-sex marriage, it leans favorably toward the idea of allowing same-sex marriage. The theme of the episode revisits the social taboo of robosexual relationships presented in earlier episodes "Space Pilot 3000" and "I Dated a Robot". Openly gay actor George Takei of "Star Trek" fame, who married his partner in California during the debate over
Radical symbol 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 It is also used for other meanings in more advanced mathematics, such as the radical of an ideal. Each positive real number has two square roots, one positive and the other negative. The square root symbol refers to the principal square root, which is the positive one. The two square roots of a negative number