Z11Z
Z11Z is a designation that can refer to several distinct concepts depending on context. In mathematics, Z11Z is sometimes used informally to denote the ring of integers modulo 11, usually written as Z/11Z. This structure consists of the eleven equivalence classes {0,1,...,10} with addition and multiplication performed modulo 11. Since 11 is prime, Z/11Z is a finite field, with the nonzero elements forming a cyclic multiplicative group of order 10. The notation arises in quick notes or computer code where compact forms are preferred, though many textbooks prefer Z/11Z or F11.
Outside mathematics, Z11Z is commonly encountered as a code or model number in product catalogs, electronics,
In other domains, Z11Z can appear as an arbitrary identifier, part number, or designation in manufacturing,
See also: Z/nZ, finite fields, modular arithmetic, product code conventions.