Tennis a new point. A game consists of a sequence of points played with the same player serving. A game is won by the first player to have won at least four points in total and at least two points more than the opponent. The running score of each game is described in a manner peculiar to tennis: scores from zero to three points are described as ""love"", ""15"", ""30"", and ""40"", respectively. If at least three points have been scored by each player, making the player's scores equal at 40 apiece, the score is not called out as "40-40", but
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