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May 11, 2024 at 16:26 vote accept Najib Idrissi
May 11, 2024 at 16:18 comment added xzczd BTW, though not quite related to your question, you may want to read this to learn what Notation package actually does: mathematica.stackexchange.com/a/185475/1871 @NajibIdrissi
May 11, 2024 at 16:07 comment added xzczd @NajibIdrissi I've elaborated a bit with 2 GIFs, see my update.
May 11, 2024 at 16:07 history edited xzczd CC BY-SA 4.0
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May 11, 2024 at 15:44 comment added xzczd @NajibIdrissi Just as you've noticed :) . 1. We don't need to load the package so it's light-weighted. 2. It's actually different from the two way notation of Notation package. Once we define a two way notation with Notation package, all the $a_{i,j}$ will be treated as a[i,j] even if we manually input a, Ctrl+-,i,j or Subscript[a, i, j]. But using my method, a, Ctrl+-,i,j or Subscript[a, i, j] will still be interpreted as Subscript[a, i, j]. In other words, my method doesn't hijack Subscript, it only creates something looks exactly the same as Subscript.
May 11, 2024 at 13:49 comment added Najib Idrissi Thanks! That works nicely. How does this compare to the Notation package?
May 11, 2024 at 9:40 history answered xzczd CC BY-SA 4.0