Abstract
Some types of extensions of skew fields are now known: Galois quadratic extensions ([7]), cyclic extensions ([1]), general quadratic extensions ([4]), binomial extensions ([5]). All these extensions belong to the class of pseudolinear extensions ([8]).
A new class of extensions, the so-called «hexaphic extensions», which extends the class of pseudo-linear extensions, will be studied in the other papers in future. For this study, we introduce in this paper skew polynomials rings in two variables over a ring, which extend the well-known skew polynomial rings in one variable (pseudolinear) first studied by O. Ore ([10]).
Similar content being viewed by others
Bibliographie
Amitsur A. S.,Non-commutative cyclic extensions, Duke Math. J.,21 (1954), 87–105.
Cohn P. M.,On the free product of associative rings, Math. Z.,71 (1959), 380–398.
Cohn P. M.,On the free product of associative rings II, the case of skew fields, Math. Z.,73 (1960), 433–456.
Cohn P. M.,Quadratic extensions, of skew fields, Proc. L.M.S.11 (1961), 531–556.
Cohn P. M.,On a class of binomial extensions, Illinois J. Math.,10 (1966), 418–424.
Cohn P. M.,Free rings and their relations, Acadamic Press, London (1971)
Dieudonné J.,Les extensions quadratiques des corps non commutatifs et leurs applications, Acta Math.,87 (1952), 175–242.
Doneddu A.,Extensions pseudo-linéaires finies des corps non commutatifs, Journal of Algebra,28 (1974) 57–87.
Jacobson N.,Structure of rings, Amer. Math. Soc. Providence (1968).
Ore O.,Theory of non-commutative polynomials, Ann. of Math., (2)34 (1933), 81–94.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Doneddu, A. Anneaux polynomiaux a deux variables. Rend. Circ. Mat. Palermo 28, 80–90 (1979). https://doi.org/10.1007/BF02849588
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02849588