Pseudomixture

A '''pseduomixture''' of states is an affine combination of states, i.e. :$\backslash rho\; =\; \backslash sum\_j\; r\_j\; \backslash rho\_j$ where $\backslash sum\_j\; r\_j\; =\; 1$ and the $r\_j$ are real. This is different from a [[mixture]] of states in that for a mixture, the $r\_j$ have to be non-negative. == See also == * [[Mixture]] {{stub}} [[Category:Quantum States]] [[Category:Mathematical Structure]]