According to the archives, this topic has been brought up and mentioned in threads a few times, but has never had its own thread.

Turns out Karl Marx made non-trivial contributions to mathematics.

>The Mathematical manuscripts of Karl Marx consist mostly of Karl Marx's attempts to understand the foundations of infinitesimal calculus, from around 1873–1883

>"Marx's operational definition of the differential anticipated 20th century developments in mathematics, and there is another aspect of the differential, that seems to have been seen by Marx, that has become a standard part of modern textbooks—the concept of the differential as the principal part of an increment."

https://en.wikipedia.org/wiki/Mathematical_manuscripts_of_Karl_Marx