An answer from fiction, so perhaps it doesn't count. In Walter Miller's science fiction classic A Canticle for Liebowitz a character comments on the power of good notation discovered in an ancient text:

"Fragments from a twentieth century physicist! The equations are even consistent."

Kornhoer peered over his shoulder. "I've seen that," he said breathlessly. "I could never make heads or tails of it. Is the subject matter important?"

"I'm not sure yet. The mathematics is beautiful, beautiful! Look here– this expression– notice the extremely contracted form. This thing under the radical sign– it looks like the product of two derivatives, but it really represents a whole set of derivatives."

"How?"

"The indices permute into an expanded expression; otherwise, it couldn't possibly represent a line integral, as the author says it is. It's lovely. And see here– this simple-looking expression. The simplicity is deceptive. It obviously represents not one, but a whole system of equations, in a very contracted form. It took me a couple of days to realize that the author was thinking of the relationships– not just of quantities to quantities– but of whole systems to other systems. I don't yet know all the physical quantities involved, but the sophistication of the mathematics is just– just quietly superb! If it's a hoax, it's inspired! If it's authentic, we may be in unbelievable luck. In either case, it's magnificent. I must see the earliest possible copy of it."

https://7chan.org/lit/src/A_Canticle_for_Leibowitz_-_Walter_M__Miller,_Jr__4.pdf