I am developing a sympy module for abstract tensor algebra and have the
following question for displaying tensors. What subscripts and
superscripts are available for simple printing via unicode. In my web
searches it looks like the subscript letter set is very limited. Is
there any reasonable alternative to LaTeX to display the tensors so that
it could be done in an immediate mode from a python program. Also is
there anyone would be interested in collaborating on such a project.
What is the best way to collaborate before a module is ready for initial
submission to sympy.
The current status of the module is that I have implemented tensor
addition, multiplication, contraction, and symmetrization for general
abstract tensors. Tensors are instanciated from strings. For example 'R
= Tensor('R_ijk__l') would instanciate a tensor with the same covariant
and contravariant indexing as the Riemann tensor. The next thing I am
doing is to impose given symmetries on a tensor such as the R is
antisymmetric in i and j and in k and l.
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