Steinberg group

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In mathematics, Steinberg group means one of two distinct, though closely related, constructions of the mathematician Robert Steinberg. See

  1. the Steinberg group (K-theory) in algebraic K-theory, denoted \operatorname{St}(A) for a ring A
  2. the Steinberg group (Lie theory) is a construction of a 'twisted' group of Lie type.