COMPLEX RINGS AND QUATERNION RINGS
2019
In [4], complex
ringsC ( R ; − 1),
quaternion
ringsH ( R ; − 1 , − 1) and
octonion
ringsO ( R ; − 1 , − 1) are studied for any
ringR . For the real numbers R , C ( R ; − 1) is the
complex numbers, H ( R ; − 1 , − 1) is the Hamilton’s
quaternionsand O ( R ; − 1 , − 1) is the Cayley-Graves’s
octonions. In view of progress of the
quaternions,
generalized
quaternion algebrasa,b F are introduced for commutative fields F and nonzero elements a, b ∈ F , and these
quaternion algebrashave been extensively studied as
number theory. In this paper, we use H ( F ; a, b ) instead of a,b F . For a
division ringD and nonzero elements a, b in the center of D , we introduce generalized complex
ringsC ( D ; a ) and generalized
quaternion
ringsH ( D ; a, b ), and study the structure of these
rings. We show that, if 2 = 0, that is, the characteristic of D is not 2, then H ( D ; a, b ) is a
simple ringand C ( D ; a ) is a
simple ringor a
direct sumof two
simple rings. Main purpose of this paper is to study structures of these
simple rings. We also study the case of 2 = 0.
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