Accretive approximation in C*-algebras
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The problem of approximation by accretive elements in a unital C*-algebra suggested by P. R. Halmos is substantially solved. The key idea is the observation that accretive approximation can be regarded as a combination of positive and self-adjoint approxi
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The problem of approximation by accretive elements in a unital C*-algebra suggested by P. R. Halmos is substantially solved. The key idea is the observation that accretive approximation can be regarded as a combination of positive and self-adjoint approxi
Keywords
UnitalMathematicsKey (lock)Pure mathematicsDiscrete mathematicsAlgebra over a fieldComputer science
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