Irish mathematician Alicia Boole Stott was born #OTD in 1860.
She discovered & described many four-dimensional polytopes & coined the term “polytope” to generalize polygons & polyhedra to higher dimensions. She extensively used Schläfli symbols to categorize and describe polytopes. Later in life, Alicia worked with Harold Coxeter and their collaboration furthered the understanding of regular polytopes and three-dimensional projections of four-dimensional figures.