I need to use the notation of doubly indexed variables, e.g., a_{i,j} in
latex. Currently, the variables belong to QQ( a_{i,j}), the field of
fractions of a polynomial ring. Now because sage will not let me write
var( 'a1,1' )
to represent the variable a_{1,1}, I am currently coding them in as
var( 'a1comma1')
However, the output is not so easy to read. I will be satisfied if there is
a straightforward way to change the latex representation of the variable
above, or a simple method already implemented to handle doubly indexed
variables.
Adam
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