A Wreath Product Approach to Classical Subgroup Theorems
نویسندگان
چکیده
منابع مشابه
A Wreath Product Approach to Classical Subgroup Theorems
We provide elementary proofs of the Nielsen-Schreier Theorem and the Kurosh Subgroup Theorem via wreath products. Our proofs are diagrammatic in nature and work simultaneously in the abstract and profinite categories. A new proof that open subgroups of quasifree profinite groups are quasifree is also given.
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ژورنال
عنوان ژورنال: L’Enseignement Mathématique
سال: 2010
ISSN: 0013-8584
DOI: 10.4171/lem/56-1-2