An (almost trivial) local-global principle for the representation of -1 as a sum of squares in an arbitrary commutative ring

DOI10.1090/conm/008/653177zbMath0506.13014OpenAlexW4241920784MaRDI QIDQ4742902

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Publication date: 1982

Published in: (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1090/conm/008/653177

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