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bn:01081942n
Noun Named Entity
NL
nielsen-schreier stelling
EN
In group theory, a branch of mathematics, the Nielsen–Schreier theorem states that every subgroup of a free group is itself free. Wikipedia
Relations
Sources
IS A
stelling
PART OF
groepentheorie
NAMED AFTER
Otto Schreier
Jakob Nielsen
STUDIED BY
categorietheorie
Wikipedia Translations
NL
nielsen-schreier stelling

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