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Giuseppe Peano was evidently a bit jealous of Leibniz' XVII ability to publish things like:
(to express commutativity and idempotency), for even in the late XIX he expresses himself anachronistically:
(Peano's versions of his symbols make better ping-pong paddles than our modern variants!)
Evidently Peano went even further than Schröder's Pasigraphy , proposing not only the formal notation for which we remember him, but even a creolized Latin to serve as a scientific conlang for informal argument ... but he wasn't foolish enough to attempt to revive greek!
- Peano, Arithmetices Principia: nova methodo exposita (1889) p. viii
- Leibniz Addenda ad Specimen Calculi Universalis (ca. 1680) p. 1