Cyclic algebra
In algebra, a cyclic division algebra is one of the basic examples of a division algebra over a field, and plays a key role in the theory of central simple algebras.
Definition
Let A be a finite-dimensional central simple algebra over a field F. Then A is said to be cyclic if it contains a strictly maximal subfield E such that E/F is a cyclic field extension (i.e., the Galois group is a cyclic group).
See also
- Factor system#Cyclic algebras - cyclic algebras described by factor systems.
- Brauer group#Cyclic algebras - cyclic algebras are representative of Brauer classes.
References
- Pierce, Richard S. (1982). Associative Algebras. Graduate Texts in Mathematics, volume 88. Springer-Verlag. ISBN 978-0-387-90693-5. OCLC 249353240.
- Weil, André (1995). Basic Number Theory (third ed.). Springer. ISBN 978-3-540-58655-5. OCLC 32381827.
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