M. Marciniak

activity

20042007

most cited

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-decomposability of positive maps

5 citations · 11 across the 3 of their papers we have counts for

collaborators

Showing 2005 · math.FAShow all

2 papers · 2 filters

math.FA2005

Decomposability of extremal positive unital maps on $M_{2}$

Wladyslaw A. Majewski, Marcin Marciniak

A map $ϕ:M_m(\bC)\to M_n(\bC)$ is decomposable if it is of the form $ϕ = ϕ_{1} + ϕ_{2}$ where $ϕ_{1}$ is a CP map while $ϕ_{2}$ is a co-CP map. It is known that if $m = n = 2$ then every positive…

math.FA2005

On decomposability of positive maps between $M_{2}$ and $M_{n}$

Wladyslaw A. Majewski, Marcin Marciniak

A map $ϕ:M_m(\bC)\to M_n(\bC)$ is decomposable if it is of the form $ϕ = ϕ_{1} + ϕ_{2}$ where $ϕ_{1}$ is a CP map while $ϕ_{2}$ is a co-CP map. A partial characterization of decomposability fo…

Decomposability of extremal positive unital maps on M2​

On decomposability of positive maps between M2​ and Mn​

Decomposability of extremal positive unital maps on $M_{2}$

On decomposability of positive maps between $M_{2}$ and $M_{n}$