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Comment by throw-the-towel

4 days ago

i has been the default variable for sum notation in mathematics long before FORTRAN. Here's an example dating from 1838: https://www.numdam.org/item/JMPA_1838_1_3__508_0.pdf

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throw-the-towel

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fph  4 days ago

It might actually be the other way round: Fortran adopted the convention that i,j,k are integer variables because that was the standard in maths.

vintagedave  4 days ago

Where in that doc, sorry? I thought I spotted something then realized it may have been a ‘1’.

  • Alexander-Barth  3 days ago

    In equation 9 (and later) for example: Dans ce développement, le terme qui en a i avant lui, a pour expression...