This is a rather basic question but I seem to be stuck, given a system made up of two subsystems how do I compute the probability of subsystem B to be in some state (for example i've got |p>=|a>|b> if I measure the second part what's the probability of it being found in state |c>, how am I supposed to deal with |a>?)(adsbygoogle = window.adsbygoogle || []).push({});

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# I Probability for a subsystem

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