Why is elbert cox famous?

Elbert Cox is famous for being the first African American to earn a Ph.D. in mathematics, which he achieved in 1925 from Columbia University. His groundbreaking achievement paved the way for future generations of mathematicians of color and highlighted the contributions of African Americans to the field of mathematics. Cox's work and dedication to education also inspired many in the academic community, making him a significant figure in both mathematics and the advancement of African Americans in higher education.