# Pseudomixture

A **pseduomixture** of states is an affine combination of states, i.e.

*ρ* = ∑*j**r**j**ρ**j* where ∑*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

Last modified:

Monday, October 26, 2015 - 17:56