apologies for apparently responding to myself. This link may provide a useful, if somewhat long-winded explanation. http://people.bath.ac.uk/masjhd/Slides/CalculemusSchool2002.pdf
>> -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/3e120694-b7eb-4aa6-b0e9-58be1ab7e50e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
