Rogelio Caballero lives in the city of Guadalajara, Mexico. He studied Physics at the University of Havana, Cuba, and received his Ph.D. Mathematics from Mexico’s National Autonomous University in 2021. He has taught Physics and Math classes at high school and college levels for about 13 years. He has worked in some of Mexico’s most prestigious universities like Monterrey’s Technological Institute (ITESM) and UNAM. Besides working for Dumb Ox, he edits Mathematics books for Christ the King Books, a small publisher devoted to creating and selling books for homeschoolers. He likes to learn about the history of mathematics and the philosophical principles behind it.