Names for the number 0 in English the score was not placed upon a scoreboard, and there is scant evidence that the French ever used "l'oeuf" as the name for a zero score in the first place, that name being as anecdotal as the hypothesis that "love" is then derived from it. (Jacob Bernoulli, for example, in his "Letter to a Friend", used "à but" to describe the initial zero–zero score in court tennis, which in English is "love-all".) Some alternative hypotheses have similar problems. For example: The assertion that "love" comes from the Scots word "luff", meaning "nothing", falls at the first hurdle, because there is
Zero of a function generally used when there are infinitely many zeros, and they have some non-trivial topological properties. For example, a level set of a function formula_1 is the zero set of formula_26. The cozero set of formula_1 is the complement of the zero set of formula_1 (i.e., the subset of formula_23 on which formula_1 is nonzero). In algebraic geometry, the first definition of an algebraic variety is through zero sets. Specifically, an affine algebraic set is the intersection of the zero sets of several polynomials in a polynomial ring formula_31 over a field. In this context, a zero set is sometimes called