unitary

== English == === Etymology === From unit +‎ -ary. === Pronunciation === (UK) IPA(key): /ˈjuːnɪt(ə)ɹi/ === Adjective === unitary Having the quality of oneness. (government, of a system of government or administration) That concentrates power in a single body, rather than sharing it with more local bodies. (mathematics, of an algebra) That contains an identity element. (mathematics, linear algebra, mathematical analysis, of a matrix or operator) Whose inverse is equal to its adjoint. ==== Synonyms ==== (that contains an identity element): unital ==== Antonyms ==== (antonym(s) of “that concentrates power in a single body”): confederal ==== Derived terms ==== ==== Related terms ==== unitariness unitarily unitarity unitarian unitize, unitise ==== Translations ==== ==== See also ==== === Noun === unitary (plural unitaries) (UK) A unitary council. (mathematics) A unitary matrix or operator. 1980, Michael Reed, Barry Simon, Methods of Modern Mathematical Physics, Volume 1: Functional Analysis, Revised and Expanded Edition page 243, Since ergodicity and mixing are expressible in terms of the induced Koopman unitaries they are not additional invariants.