Proves that the index of primitivity for primitive unital Schwarz maps is bounded above by 2(D-1)^2, extending Rahaman's result to maps that need not preserve trace.
Størmer.Positive Linear Maps of Operator Algebras
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A note on the quantum Wielandt inequality
Proves that the index of primitivity for primitive unital Schwarz maps is bounded above by 2(D-1)^2, extending Rahaman's result to maps that need not preserve trace.