In 1987, Elkies proved that an elliptic curve over the rational numbers is supersingular at infinitely many primes. In 1988, he found a counterexample to Euler's sum of powers conjecture for fourth powers.[13] His work on these and other problems won him recognition and a position as an associate professor at Harvard in 1990.[5] In 1993, Elkies was made a full, tenured professor at age 26. This made him the youngest full professor in Harvard's history.[14] He and A. O. L. Atkin extended Schoof's algorithm to create the Schoof–Elkies–Atkin algorithm.
Elkies also studies the connections between music and mathematics; he is on the advisory board of the Journal of Mathematics and Music.[15] He has discovered many new patterns in Conway's Game of Life[16] and has studied the mathematics of still life patterns in that cellular automaton rule.[17] Elkies is an associate of Harvard's Lowell House.[18]
Elkies is one of the principal investigators of the Simons Collaboration on Arithmetic Geometry, Number Theory, and Computation, a large multi-university collaboration involving Boston University, Brown, Dartmouth, Harvard, and MIT.[19]
Elkies is the discoverer (or joint-discoverer) of many current and past record-holding elliptic curves, including the curve with the highest-known lower bound (≥28) on its rank, and the curve with the highest-known exact rank (=20).[20][21] In August 2024, he posted to a number theory listserv that he and Zev Klagsbrun had found an elliptic curve of rank at least 29 by methods similar to those used to find the rank 28 example.[22]
Music
Elkies is a bass-baritone and formerly played the piano for the Harvard Glee Club. Jameson N. Marvin, former director of the Glee Club, compared him to "a Bach or a Mozart", citing his "gifted musicality, superior musicianship and sight-reading ability".[23] He rings the bells of Lowell House.[24]
^Altman, Daniel (9 February 1995). "Math and Music: For the Moment". The Harvard Crimson. Elkies spent eight years of his youth in Israel, and he came to New York City having read a Hebrew translation of Euclid but without any significant knowledge of English.
^ abElkies, Noam D. "CV". Noam Elkies. Department of Mathematics, Harvard University. Retrieved 10 August 2018.
^Columbia College (Columbia University). Office of Alumni Affairs and Development; Columbia College (Columbia University) (1987). Columbia College today. Columbia University Libraries. New York, N.Y. : Columbia College, Office of Alumni Affairs and Development.