there are a few articles on Leibniz and his use of indexes:
Dietrich MAHNKE, "Die Indexbezeichnung bei Leibniz als Beispiel
seiner kombinatorischen Charakteristik", in: BIBLIOTHECA MATHEMATICA,
3rd series, vol. 13 (1912/13), pp. 250-260.
Eberhard KNOBLOCH, "Die unveroeffentlichten mathematischen Arbeiten
von Leibniz", in: Leibniz a\ Paris (1672-1676). Symposion de la
G.-W.-Leibniz-Gesellschaft et du CNRS a\ Chantilly 14-18 novembre
1976: Tome I: Les sciences, Wiesbaden, 1978, pp.3-43 (esp. pp. 29-34).
Yours sincerely
Siegmund Probst
> Date: Wed, 31 Mar 1999 20:09:13 -0500
> From: Luis Radford <lradford@NICKEL.LAURENTIAN.CA>
> Subject: [HM] subindexes
>
> The history of the use of exponents in mathematical notation is well
> documented, but what about the subindexes?
> I will appreciate any help on this.
>
> Luis Radford
>
>
> ------------------------------------------
> Luis Radford
> Ecole des sciences de l'education
> Laurentian University
> Sudbury, Ontario
> P3E 2C6 CANADA
>
> tel. (705) 675-1151 ext. 5022
> fax (705) 675-4816
>