Claim: Robert Edward Bowen, born on February 23, 1947 at Vallejo, California, US, was known for Bowen's formula and specialization in dynamical systems theory (used to describe the behavior of complex dynamical systems).
Evidence: Robert Edward "Rufus" Bowen (23 February 1947 – 30 July 1978) was an internationally known professor in the Department of Mathematics at the University of California, Berkeley, who specialized in dynamical systems theory. Robert Edward Bowen was born in Vallejo, California, to Marie DeWinter Bowen, a school teacher, and Emery Bowen, a Travis Air Force Base budget officer, but he grew up fifteen miles away in Fairfield, California, where he attended the public schools and graduated from Armijo High School in 1964. Dynamical systems theory is an area of mathematics used to describe the behavior of complex dynamical systems, usually by employing differential equations or difference equations. Dynamical systems theory
Bowen's formula 
Robert Edward Bowen
(1947-02-23)23 February 1947
Vallejo, California, US Dynamical systems theory is an area of mathematics used to describe the behavior of complex dynamical systems, usually by employing differential equations or difference equations. Dynamical systems theory
Bowen's formula Robert Edward "Rufus" Bowen (23 February 1947 – 30 July 1978) was an internationally known professor in the Department of Mathematics at the University of California, Berkeley, who specialized in dynamical systems theory.