Dmitry Mirimanoff

Who was Dmitry Mirimanoff?

Dmitry Semionovitch Mirimanoff became a doctor of mathematical sciences in 1900, in Geneva, and taught at the universities of Geneva and Lausanne. Mirimanoff made notable contributions to axiomatic set theory and to number theory. In 1917, he introduced, though not as explicitly as John von Neumann later, the cumulative hierarchy of sets and the notion of von Neumann ordinals; although he introduced a notion of regular he did not consider regularity as an axiom, but also explored what is now called non-well-founded set theory and had an emergent idea of what is now called bisimulation.

Dmitry Mirimanoff became a member of the Moscow Mathematical Society in 1897.