Valery Mishkin

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In answer to a question of Macpherson and Neumann related to the classiication of maximal subgroups of innnite symmetric groups, we characterize set ideals on an innnite set X whose stabilizers in the symmetric group Sym(X) are maximal subgroups. Speciically, for an ideal I containing all subsets of cardinality less than jXj, the stabilizer S fIg is maximal(More)
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