Squashed entanglement, also called CMI entanglement (CMI can be pronounced "see me"), is an information theoretic measure of quantum entanglement for a bipartite quantum system. If formula_1 is the density matrix of a system formula_2 composed of two subsystems formula_3 and formula_4, then the CMI entanglement formula_5 of system formula_2 is defined by
Squashed entanglement is not known as CMI entanglement.
( z1 know :polarity - :ARG1 ( z2 entangle :ARG1-of ( z3 squash ) ) :ARG2 ( z4 entangle :ARG1 ( z5 military :name ( z6 name :op "CMI" ) ) ) )