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
CMI is like a two-syllable word
( z1 resemble :ARG1 ( z2 product :name ( z3 name :op "CMI" ) ) :ARG2 ( z4 word :ARG1-of ( z5 rhyme :ARG2 ( z6 string-entity :value 2 ) ) ) )