A Characterization of the Quaternions Using Commutators

Erwin Kleinfeld, Yoav Segev

Research output: Working paper/PreprintPreprint

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Let R be an associative ring with 1, which is not commutative. Assume that any non-zero commutator v ∈ R satisfies: v2 is in the center of R and v is not a zero-divisor. (Note that our assumptions do not include finite dimensionality.) We prove that R has no zero divisors, and that if char(R) 6= 2, then the localization of R at its center is a quaternion division algebra.
Original languageEnglish GB
StatePublished - 21 Jul 2021


  • math.RA
  • Primary: 12E15


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