Hello Aaron,
thanks for the reply. First, subst() is a typo, and should be subs(), but
I'm not using it here anyway.
The test program contains this definition:
E1m1 = symbols('E_{1\,-1}')
so you can see that I am using the _ in it. The problem is the conversion
to latex, which recognizes E11, converting it the way I need, and does not
recognize/convert E1m1.
In any case your response has helped me see a bit clearer. I use E1m1 in
the code for expressions, and want it to appear as 'E_{1\,-1}' in latex.
That raises the question of how I should do this when I call sympify. In
the line of code above, both forms appear E1m1 and 'E_{1\,-1}', but not in
sympify.
The next thing I will try is the following:
In the routine tripLet, I will create both strings, the symbol (e.g. E1m1)
and the latex display version (e.g. 'E_{1\,-1}'), then issue the call to
symbols(), and then combine the symbols to create and return the expression.
>
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