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bn:03805992n
Noun Named Entity
NL
Gelfand–Mazur theorem
EN
In operator theory, the Gelfand–Mazur theorem is a theorem named after Israel Gelfand and Stanisław Mazur which states that a Banach algebra with unit over the complex numbers in which every nonzero element is invertible is isometrically isomorphic to the complex numbers, i. Wikipedia
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IS A
stelling
NAMED AFTER
Stanisław Mazur
Israel Gelfand
SOLVED BY
Israel Gelfand
Wikidata
NL
Gelfand–Mazur theorem

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