National Nicole Day
Wednesday, December 23, 2026
A Name Tied to Scientific Breakthroughs. Nicole Oresme, born around 1320 in Normandy, served as Grand Master of the College of Navarre and later as Bishop of Lisieux. He conceived the idea of representing mathematical functions with rectangular coordinates, a technique typically attributed to Rene Descartes nearly three centuries later. Oresme also produced the first known proof for the divergence of theharmonic seriesand argued that the Earth might rotate on its axis, anticipating Copernicus
History
A Name Tied to Scientific Breakthroughs. Nicole Oresme, born around 1320 in Normandy, served as Grand Master of the College of Navarre and later as Bishop of Lisieux. He conceived the idea of representing mathematical functions with rectangular coordinates, a technique typically attributed to Rene Descartes nearly three centuries later. Oresme also produced the first known proof for the divergence of theharmonic seriesand argued that the Earth might rotate on its axis, anticipating Copernicus
How It's Celebrated
National Nicole Day is observed by recognizing the importance of the day, learning about its background and significance, and sharing awareness with others through conversation and social media. Many people take time to reflect on the meaning of the observance and participate in relevant activities or community events.