List of Famous people born on October 20th

William Henry Young FRS was an English mathematician. Young was educated at City of London School and Peterhouse, Cambridge. He worked on measure theory, Fourier series, differential calculus, amongst other fields, and made contributions to the study of functions of several complex variables. He was the husband of Grace Chisholm Young, with whom he authored and co-authored 214 papers and 4 books. Two of their children became professional mathematicians. Young's Theorem was named after him.

Bernard Louis Zehrfuss was a French architect.

Suzanne Duchamp-Crotti was a French Dadaist painter, collagist, sculptor, and draughtsman. Her work was significant to the development of Paris Dada and modernism and her drawings and collages explore fascinating gender dynamics. Due to the fact that she was a woman in the male prominent Dada movement, she was rarely considered an artist in her own right. She constantly lived in the shadows of her famous older brothers, who were also artists, or she was referred to as "the wife of." Her work in painting turns out to be significantly influential to the landscape of Dada in Paris and to the interests of women in Dada. She took a large role as an avant-garde artist, working through a career that spanned five decades, during a turbulent time of great societal change. She used her work to express certain subject matter such as personal concerns about modern society, her role as a modern woman artist, and the effects of the First World War. Her work often weaves painting, collage, and language together in complex ways.

Herbert "Herb" Simon is an American real estate developer. He resides in Indianapolis, Indiana. He was educated at the City College of New York. He is the owner of the Indiana Pacers, and chairman emeritus of the shopping mall developer Simon Property Group. In 2010, he purchased Kirkus Reviews.