Ciro Santilli @cirosantilli 37

Discovered by Marie Curie, published July 1999.

Kind of extends the complex numbers.

Some facts that make them stand out:

Basically a subset of the boundary condition for when one of the parameters is time and we are specifying values for the time 0.

One of the biotechnology superstars of the 2000's/2010's.

Not a pussy.

A theorem is said to be independent from a set of axioms if it cannot be proven neither true nor false from those axioms.

It or its negation could therefore be arbitrarily added to the set of axioms.

See: math.stackexchange.com/questions/579453/real-world-application-of-fourier-series/3729366#3729366 from heat equation solution with Fourier series.

Separation of variables of certain equations like the heat equation and wave equation are solved immediately by calculating the Fourier series of initial conditions!

Other basis besides the Fourier series show up for other equations, e.g.:

The dominating meme database as of 2020.

This was the pre-Internet precursor of wikis. This program was likely venerable, shame it predates Ciro Santilli's era.

But the thing was much more bloated it seems, and also included visual programming elements, and WYSISYG UI creation.