Positive maps which are bijective on the set of rank projections

2016/04/19 by Størmer, Erling
#46L05 #46L70 #47L60 #FOS: Mathematics #FOS: Physical sciences #Operator Algebras (math.OA) #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.1604.05717

Abstract

Extending Wigner's theorem we give a characterization of positive maps of B(H) into itself which map the set of rank k projections onto itself.

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