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91Class formation — In mathematics, a class formation is a structure used to organize the various Galois groups and modules that appear in class field theory. They were invented by Emil Artin and John Tate. Contents 1 Definitions 2 Examples of class formations 3 The …
92Class invariant — This article is about class invariants in computer programming, for use of the term in mathematics, see equivalence class and invariant. In computer programming, specifically object oriented programming, a class invariant is an invariant used to… …
93Class number problem — In mathematics, the Gauss class number problem (for imaginary quadratic fields), as usually understood, is to provide for each n ≥ 1 a complete list of imaginary quadratic fields with class number n. It is named after the great… …
94Class-based programming — Programming paradigms Agent oriented Automata based Component based Flow based Pipelined Concatenative Concurrent computin …
95Class President — A Class President is usually the leader of a student body class and presides over its class cabinet or organization within a Student Council in an elementary, junior high, high school, or college. Class Presidents are generally elected by the… …
96Class 4 telephone switch — A Class 4, or Tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the Public Switched Telephone Network. A Class 4 switch… …
97Class (set theory) — In set theory and its applications throughout mathematics, a class is a collection of sets (or sometimes other mathematical objects) which can be unambiguously defined by a property that all its members share. The precise definition of class… …
98Class field theory — In mathematics, class field theory is a major branch of algebraic number theory that studies abelian extensions of number fields. Most of the central results in this area were proved in the period between 1900 and 1950. The theory takes its name… …
99The Association of Former Students — Infobox Organization name = The Association of Former Students image border = size = caption = motto = formation = 1879 type = Alumni association headquarters = College Station, Texas, USA location = membership = 280,000 leader title = Executive… …
100Class 5 telephone switches — A Class 5 switch, in United States telephony jargon, refers to a telephone switch or exchange located at the local telephone company s central office, directly serving subscribers. Class 5 switch services include basic dial tone, calling features …
