|Born||1971 (age 45–46)
|Institutions||University of Wisconsin–Madison|
|Alma mater||Harvard University|
|Doctoral advisor||Barry Mazur|
|Notable awards||Guggenheim Fellowship (2015)|
Jordan Stuart Ellenberg (born 1971) is an American mathematician working as a Professor of Mathematics at the University of Wisconsin–Madison. His research covers a wide variety of topics within arithmetic geometry. He received both the A.B. and Ph.D. from Harvard University, where he was a two-time Putnam Fellow.
In addition to his research articles, he has authored a novel, The Grasshopper King, which was a finalist for the 2004 Young Lions Fiction Award; the "Do the Math" column in Slate; a non-fiction book, How Not to Be Wrong; and various articles on mathematical topics in The New York Times, The Washington Post, The Boston Globe, Wired, Seed, and The Believer.
Ellenberg was a child prodigy who taught himself to read at the age of 2 by watching Sesame Street. His mother discovered his ability one day while she was driving on the Capital Beltway when her toddler informed her: "The sign says `Bethesda is to the right.'" In second grade, he helped his teenaged babysitter with her math homework. When he was seven, Ellenberg was discovered by Eric Walstein, a teacher at the nearby Montgomery Blair High School. Walstein took Ellenberg under his wing and oversaw his mathematical development. By fourth grade, he was participating in high school competitions (such as the American Regions Mathematics League) as a member of the Montgomery County math team. And by eighth grade, he had started college-level work. He was part of the Johns Hopkins University Study of Mathematically Precocious Youth longitudinal cohort. He scored a perfect 800 on the math portion and a 680 on the verbal portion of the SAT-I exam at the age of 12. When he was in eighth grade, he took honors calculus classes at the University of Maryland; when he was a junior at Winston Churchill High School, he earned a perfect score of 1600 on the SAT; and as a high school senior, he placed second in the national Westinghouse Science Talent Search. He participated in the International Mathematical Olympiads three times, winning two gold medals in 1987 and 1989 (with perfect scores) and a silver medal in 1988. He was also a two-time Putnam fellow (1990 and 1992) while at Harvard.
- How Not to Be Wrong: The Power of Mathematical Thinking (Penguin, 2014) ISBN 978-1594205224 
- The Grasshopper King (Coffee House Press, 2003) ISBN 978-1566891394
- Ellenberg, Jordan (30 May 2014). "The Wrong Way to Treat Child Geniuses". Wall Street Journal. Retrieved 1 June 2014.
- "Jordan S. Ellenberg". wisc.edu.
- "The Grasshopper King: Jordan Ellenberg: 9781566891394: Amazon.com: Books". amazon.com.
- Young Lions Fiction Award
- "Do The Math". Slate Magazine.
- How Not to Be Wrong: The Power of Mathematical Thinking. The Royal Institution/YouTube. 24 June 2015.
- Jordan Ellenberg (29 May 2014). How Not to Be Wrong: The Power of Mathematical Thinking. Penguin Publishing Group. ISBN 978-0-698-16384-3.
- "How Not to Be Wrong: The Power of Mathematical Thinking: Jordan Ellenberg: 0884817006765: Amazon.com: Books". amazon.com.
- List of Fellows of the American Mathematical Society, retrieved 2012-12-02.
- "A Sine of a True Genius;Md. Youth Wins Major Math Competition: Jordan Ellenberg". The Washington Post, June 7, 1989, Amy Goldstein. Retrieved 2008-10-10.
- "The Wrong Way to Treat Child Geniuses". The Wall Street Journal, May 30, 2014, Jordan Ellenberg. Retrieved 2014-12-09.
- "International Mathematical Olympiad: Jordan Ellenberg". IMO. Retrieved 2010-04-08.
- "William Lowell Putnam Competition: 1938 – 2008". UNL. Retrieved 2008-10-10.
- Bellos, Alex (13 June 2014). "How Not to Be Wrong: The Hidden Maths of Everyday Life by Jordan Ellenberg - review". The Guardian. Retrieved 8 June 2016.
- Suri, Manil (13 June 2014). "Book review: "How Not to Be Wrong: The Power of Mathematical Thinking," by Jordan Ellenberg". The Washington Post. Retrieved 8 June 2016.
- Lamb, Evelyn (31 May 2014). "How Not to Be Wrong (Book Review)". Scientific American. Retrieved 8 June 2016.