3 problems

Let $\Phi_1,\Phi_2\in\mathcal{T}_n(\mathbb{C})$ be linear maps. A map $\Phi$ is PPT when both $\Phi$ and $\Phi\circ\mathsf{T}$ are completely positive, and it is entanglement break…

Let $\matrices$ denote the matrix algebra in the paper. A linear map $\psi:\matrices\to\matrices$ is PPT if it is completely positive and completely copositive, meaning that both…

Let $\mathcal{M}_d$ denote the algebra of complex $d\times d$ matrices, and let $T:\mathcal{M}_d\rightarrow\mathcal{M}_d$ be a linear map. A map is completely positive if all its a…