2 articles
Majorization
Majorization is a partial order on real vectors, introduced by Hardy, Littlewood, and Pólya, that formalizes one vector being more spread out, or less random, than another.
Majorization and entropy ordering of quantum states
Majorization is a preorder on probability vectors and quantum state spectra that formalizes when one distribution is more disordered, and by Nielsen's theorem it fully determines LOCC conversion of bipartite pure states.