A Nigerian mathematician builds postcolonial higher education

His work includes renewal theory, dynamic programming, Bayesian statistics and the Blackwell approachability theorem.

Opposition from Princeton reflected how elite mathematical spaces excluded Black scholars regardless of achievement.

His teaching, collaboration and mentorship helped widen pathways into advanced mathematics.

Obi became a pioneering Nigerian mathematician known for research on nonlinear differential equations.

His work examined conditions under which nonlinear equations produce repeating behaviour and algebraic limit cycles.

He also organized politically and argued about Nigeria's development, showing that mathematicians can participate directly in public struggles.

Jackson moved from the West Area Computing Unit into engineering and became NASA's first Black female engineer.

Her research analyzed boundary layers, pressure and aircraft behaviour in high-speed wind tunnels.

She needed special permission to attend classes held at an all-white school, exposing how law restricted scientific careers.

She left engineering management for equal-opportunity work aimed at improving hiring and promotion routes.