F-16 models are denoted by increasing block numbers to denote upgrades. Colloquially, more general nonspecific terms may denote cattle when a singular form is needed. The various "V" denote the corresponding CKM matrix coefficients. In some cases, Roman numerals denote scale degrees themselves. Furthermore, in ring theory, braces denote the anticommutator where is defined as . The latter two terms also denote units of revelation. They can also denote temporal or causal relations. Let formula 53 denote an integer such that formula 54, and set formula 55. Typically, longer contracts denote greater seniority or higher rank. Let "D" denote an open subset of C, and let . Let "d" denote the number of variables. Names without ranks typically denote the rank of firefighter. In British English, the word may also denote a preprinted journal format. Here we will denote the identity element by formula 11. Silverface cosmetics do not necessarily denote silverface circuitry, however.