Name: Saurabh Rindani (email_not_shown)
Date: 05/24/06-12:32:18 PM Z


I find that in using FermionSpinSum I often get an error message


followed by an expression without FermionSpinSum evaluated.

One example of such an occurrence is when one of the factors inside FermionSpinSum is a sum of terms, each being a matrix sandwiched between spinors. But there are also other cases.

Can you tell me what is going wrong? (And what does MIST mean?)


Best regards,

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