Bhat, B. V. R.; Chattopadhyay, A.; Kosuru, G. S. R.
(2021-09-29)
Let Mn be the C∗ algebra of n × n complex matrices and let ϕ : Mn → Mn be
a completely positive map. Suppose A ∈ Mn is a self-adoint matrix. We prove
a submajorization result concerning positive and negative parts of the ...