منابع مشابه
Jordan Groups and Automorphism Groups of Algebraic Varieties
The first section of this paper is focused on Jordan groups in abstract setting, the second on that in the settings of automorphisms groups and groups of birational self-maps of algebraic varieties. The appendix contains formulations of some open problems and the relevant comments. MSC 2010: 20E07, 14E07
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WHEN we speak of a 'back and forth' construction for proving the isomorphism of two countable structures we call to mind the famous theorem of Cantor that any countable dense linearly ordered set without end-points is order-isomorphic to Q. Cantor's own proof requires only the 'going forth' part of the construction, however, and Adrian Mathias, on noticing this, asked for a classification of th...
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For finite p-groups P of class 2 and exponent p the following are invariants of fully refined central decompositions of P : the number of members in the decomposition, the multiset of orders of the members, and the multiset of orders of their centers. Unlike for direct product decompositions, AutP is not always transitive on the set of fully refined central decompositions, and the number of orb...
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(i) A subgroup of PFL(d, q) containing PSL(d, q), in its usual 2-transitive representation; (ii) A collineation group of AG(d, q), containing the group ASL(d, q) of collineations generated by elations, in its usual 2-transitive representation on AG(d, q); (iii) A 7 in its 2-transitive representation of degree 15; (iv) There is a regular normal subgroup, and if x~S then F x acts on S { x } as th...
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ژورنال
عنوان ژورنال: Journal of Algebra
سال: 1969
ISSN: 0021-8693
DOI: 10.1016/0021-8693(69)90024-6