Epstein class · noun1
Named for French mathematician Q130087037 (Q130087037) (1932-2024).
Epstein class · proper noun2
By analogy with ruling class. Coined in early 2026.
Etymology from Wiktionary, CC BY-SA 4.0.
Epstein class
Today it means: A family of real-analytic interval maps that have a particularly well-controlled extension to the complex plane, used to study renormalization, especially for unimodal maps and critical circle maps. Full definition →