Avraham Trahtman
| Avraham Naumovich Trahtman | |
|---|---|
| Абрам Наумович Трахтман | |
| Born | 10 February 1944 | 
| Died | 17 July 2024 (aged 80) | 
| Alma mater | Ural State University | 
| Known for | solving the road coloring problem | 
| Scientific career | |
| Fields | Mathematics | 
| Institutions | Bar-Ilan University | 
| Doctoral advisor | Lev N. Shevrin | 
Avraham Naumovich Trahtman (Trakhtman) (Russian: Абрам Наумович Трахтман; 10 February 1944 – 17 July 2024) was a Soviet-born Israeli mathematician and academic at Bar-Ilan University (Israel). In 2007, Trahtman solved a problem in combinatorics that had been open for 37 years, the Road Coloring Conjecture posed in 1970. Trahtman died in Jerusalem on 17 July 2024, at the age of 80.