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Tien-Yien Li (李天岩) (born 1945) is a University Distinguished Professor of Mathematics at Michigan State University and a Guggenheim Fellow. Li and co-author James Yorke published a paper in 1975 entitled Period three implies chaos, in which the mathematical term chaos was coined.

Li, Tien-Yien

NationalityUnited States
Alma materNational Tsing Hua University (1968)
University of Maryland, College Park Ph.D (1974)
AwardsGuggenheim Fellowship (1995)
Scientific career
InstitutionsMichigan State University
Doctoral advisorJames Yorke

Awards and honorsEdit

  • Guggenheim Fellow, 1995
  • Distinguished Faculty Award, College of Natural Science, Michigan State University, 1996
  • Distinguished Faculty Award, Michigan State University, 1996
  • J.S.Frame Teaching Award, 1996
  • University Distinguished Professor, Michigan State University, 1998
  • Distinguished Alumni, College of Sciences, Tsing Hua University, Taiwan, 2002
  • Outstanding Academic Advisor Award, College of Natural Science, Michigan State University, 2006