- From: David Farmer <farmer@aimath.org>
- Date: Thu, 7 Oct 2021 23:09:26 -0400 (EDT)
- To: www-math@w3.org

Taking this discussion out of GitHub. I hope this is the right place. The important point which has arisen, which I believe we had not discussed previously, is how to mark a multi-letter string as representing a single variable. For example, on this page: https://www.dummies.com/business/accounting/how-to-calculate-simple-and-compound-interest/ it says Interest = p \times r \times t . Here "Interest" is an 8 character string which represents one quantity. This is analogous to the situation in our recent discussions, where B' is just one quantity which happens to be a string of two characters. The fact that one of the characters is a prime is not the main issue. I mentioned an example where a_1 was a (subscripted) string which also is really just a single variable. Prior to this week I don't think we had discussed the fact that B' is a 2-character quantity, while f' -- assuming that means the derivative of f -- is the object f on which ' is acting. The only point I am trying to make here is that we need a way to indicate that a collection of characters is really in indivisible unit which represents a single quantity. The recent discussions were made more difficult by the fact that this had not been discussed previously. I suggest that " B' " should be handled the same way as " Interest " would be handled in the formula above. Regards, David Farmer

Received on Friday, 8 October 2021 03:09:41 UTC