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bn:01081942n
Noun Named Entity
EL
nielsen-schreier θεώρημα
EN
In group theory, a branch of mathematics, the Nielsen–Schreier theorem states that every subgroup of a free group is itself free. Wikipedia
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IS A
θεώρημα
PART OF
θεωρία ομάδων
NAMED AFTER
Ότο Σράιερ
Jakob Nielsen
STUDIED BY
θεωρία κατηγοριών
Wikipedia Translations
EL
nielsen-schreier θεώρημα

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