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  • $\begingroup$ Unfortunately it doesn't, since I explicitly would want an expression that works with a symbolic index: in your examples, you always give m an explicit integer value, whereas I would want the indexing to work for symbolic inputs, i.e. aV[m] should return a[m] or a_m, where both a and m are symbolic. $\endgroup$ Commented Aug 5, 2023 at 15:28
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    $\begingroup$ As much as I understand you, you are looking for a possibility to make symbolic operations with indexed tensors, right? I am also looking for such an approach, but up to now, did not see a satisfactory one. $\endgroup$ Commented Aug 5, 2023 at 21:28
  • $\begingroup$ Yes! I ended up defining a wrapper function that wraps 2D arrays and produces the desired behavior, but it would be nice to have a general abstract array class that generalizes to higher dimensions, and even symbolic sizes. Honestly somewhat surprised this does not exist yet! $\endgroup$ Commented Aug 7, 2023 at 15:15