Automorphisms of the ordered multiplicative group of positive rational numbers
نویسندگان
چکیده
منابع مشابه
On Computable Automorphisms of The Rational Numbers
The relationship between ideals I of Turing degrees and groups of I{recursive automorphisms of the ordering on rationals is studied. We discuss the diierences between such groups and the group of all auto-morphisms, prove that the isomorphism type of such a group completely deenes the ideal I, and outline a general correspondence between principal ideals of Turing degrees and the rst{order prop...
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Let W be a variety of groups defined by a set W of laws and G be a finite p-group in W. The automorphism α of a group G is said to bea marginal automorphism (with respect to W), if for all x ∈ G, x−1α(x) ∈ W∗(G), where W∗(G) is the marginal subgroup of G. Let M,N be two normalsubgroups of G. By AutM(G), we mean the subgroup of Aut(G) consistingof all automorphisms which centralize G/M. AutN(G) ...
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1994
ISSN: 0002-9939
DOI: 10.1090/s0002-9939-1994-1195720-5