For 148 years, the University of South Africa had never seen a Black woman complete a doctorate in Pure Mathematics, until Professor Oghenetega Ighedo broke that streak, finishing her PhD in just three years while simultaneously raising two children and expecting a third.
Ighedo’s path to the milestone began far from UNISA’s campus, tracing back to Delta State University, where she earned her Bachelor of Science in Industrial Mathematics. From there, she moved to the University of Ibadan for a Master of Science in Pure Mathematics, before eventually pursuing her doctorate at UNISA, where she was already serving as an Associate Professor in the Department of Mathematical Sciences by the time she completed the degree.
The roots of her interest in mathematics trace back further still, to childhood, watching her mother, a retired mathematics teacher, at work. “I was inspired by my mother. I saw the way she taught mathematics, and as I grew older, I found it interesting and wanted to do it like her,” she said, as quoted by Women Power Africa.
That early inspiration eventually evolved into something more deliberate once Ighedo entered the field professionally. Recognizing how few Black mathematicians, and even fewer Black women, occupied the space of pure mathematics, she said the imbalance itself became part of her motivation to pursue advanced study. “My decision to study pure mathematics was motivated by the fact that not only are there few Black pure mathematicians, but there are even fewer Black women in the field,” she explained.
What makes her three-year completion timeline particularly striking is the context surrounding it. Ighedo took on her PhD while married, already raising two children, and pregnant with a third, juggling the demands of doctoral-level research alongside the realities of family life. Despite that load, she still finished within the program’s prescribed timeframe, a detail that has become central to how her achievement is being received.
Since completing her degree, Ighedo has turned her attention toward encouraging other young women pursuing academic and professional paths, emphasizing that determination and resilience can carry them through obstacles that might otherwise feel insurmountable.
Her breakthrough is now being held up as a meaningful marker of progress for Black women’s representation in mathematics and STEM more broadly, and as a reminder of the expanding role African scholars are playing in global research and higher education.
