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?)
This archive was generated by hypermail 2b29 : 11/24/17-01:40:02 PM Z CET