Tien-Yien Li | |
---|---|

Born | 李天岩 June 28, 1945 Sha County, Fujian Province, China |

Died | (aged 75) Michigan, U.S. |

Nationality | American |

Alma mater | National Tsing Hua University (1968) University of Maryland, College Park Ph.D (1974) |

Awards | Guggenheim Fellowship (1995) |

Scientific career | |

Fields | Mathematics |

Institutions | Michigan State University |

Doctoral advisor | James Yorke |

**Tien-Yien Li** (李天岩) (June 28, 1945 – June 25, 2020) was a University Distinguished Professor of Mathematics and University Distinguished Professor Emeritus at Michigan State University.^{ [1] } There, he spent 42 years and supervised 26 Ph.D. dissertations.

Li was born on June 28, 1945, in Sha County, Fujian Province, China. At age three, he was brought to Taiwan by his parents. He earned his B.S. in Mathematics at the National Tsinghua University in 1968. Li received his doctorate in 1974 from University of Maryland under the guidance of James Yorke.

Li joined the faculty of the Department of Mathematics at Michigan State University in 1976 and was promoted to the rank of full professor in 1983. He retired as a University Distinguished Professor Emeritus in 2018 after spending 42 years at the university. Li and his supervisor James Yorke published a paper in 1975 entitled * Period three implies chaos,* in which the mathematical term chaos was coined.^{ [2] } He also proved Ulam's conjecture in the field of computation of invariant measures of chaotic dynamical systems. Working with Kellogg and Yorke, Li's ideas and the use of numerical methods in computing Brouwer's fixed point, part of the field of modern Homotopy Continuation methods.

- 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.
- National Tsinghua University's Outstanding Alumni Award, Taiwan, 2012.

**National Tsing Hua University** is a public research university in Hsinchu City, Taiwan.

**James A. Yorke** is a Distinguished University Research Professor of Mathematics and Physics and former chair of the Mathematics Department at the University of Maryland, College Park.

**George Neil Robertson** is a mathematician working mainly in topological graph theory, currently a distinguished professor emeritus at the Ohio State University.

**Thomas A. Metzger** is a senior fellow at Stanford University's Hoover Institution. He is the son of the German philosopher Arnold Metzger (1892–1974). He specializes in the intellectual and institutional history of China, studying both the premodern and modern periods. His current research focuses on contemporary China's moral-political discourse and its historical roots, dealing with both China and Taiwan. He also has written on U.S.–China policy issues and has lectured widely in English and Chinese in the United States, Europe, Taiwan, China, and Hong Kong.

**Charles Francis Van Loan** is an emeritus professor of computer science and the Joseph C. Ford Professor of Engineering at Cornell University, He is known for his expertise in numerical analysis, especially matrix computations.

**Chia-Chiao Lin** was a Chinese-born American applied mathematician and Institute Professor at the Massachusetts Institute of Technology.

**Brian P. Coppola** is a chemistry professor at the University of Michigan.

**Satya Atluri** is an American engineer, educator, researcher and scientist in aerospace engineering, mechanical engineering and computational sciences, who is currently a Distinguished Professor Emeritus of Aerospace Engineering at the University of California, Irvine. Since 1966, he made fundamental contributions to the development of finite element methods, boundary element methods, Meshless Local Petrov-Galerkin (MLPG) methods, Fragile Points Methods (FPM), Local Variational Iteration Methods, for general problems of engineering, solid mechanics, fluid dynamics, heat transfer, flexoelectricity, ferromagnetics, gradient and nonlocal theories, nonlinear dynamics, shell theories, micromechanics of materials, structural integrity and damage tolerance, Orbital mechanics, Astrodynamics, digital Twins of Aerospace Systems, etc.

**Sung-Mo “Steve” Kang** is an electrical engineering scientist, professor, author, inventor, entrepreneur and 15th president of KAIST. Kang was appointed as the second chancellor of the University of California, Merced in 2007. He was the first department head of foreign origin at the electrical and computer engineering department at the University of Illinois at Urbana-Champaign. Dr. Kang teaches and has written extensively in the field of computer-aided design for electronic circuits and systems; he is recognized and respected worldwide for his outstanding research contributions. Dr. Kang has led the development of the world’s first 32-bit microprocessor chips as a technical supervisor at AT&T Bell Laboratories and designed satellite-based private communication networks as a member of technical staff. Dr. Kang holds 15 U.S. patents and has won numerous awards for his ground breaking achievements in the field of electrical engineering.

**Wen-Ch'ing (Winnie) Li** is a Taiwanese-American mathematician and a Distinguished Professor of Mathematics at Pennsylvania State University. She is a number theorist, with research focusing on the theory of automorphic forms and applications of number theory to coding theory and spectral graph theory. In particular, she has applied her research results in automorphic forms and number theory to construct efficient communication networks called Ramanujan graphs and Ramanujan complexes.

**Ying-Cheng Lai** is a Chinese theoretical physicist/electrical engineer who works in the field of chaos theory and complex dynamical systems. He is among the pioneers in the field of relativistic quantum chaos. Currently, he works at Arizona State University as a Regents Professor. He also holds an ISS Chair Professorship in Electrical Engineering.

**Raymond Morris Bowen** is an American academic. He served as the 21st president of Texas A&M University from 1994 until 2002. He served as Interim President of Oklahoma State University (OSU) from 1993 until 1994, and Provost and VP for Academic Affairs at OSU from 1991 until 1993. He was Dean of Engineering at the University of Kentucky from 1983 until 1989. At The University of Kentucky, he also served as Director of the Center for Robotics and Manufacturing Systems and Director of the Center for Applied Energy Research. Bowen was Chair of Mechanical Engineering at Rice University from 1972 until 1977.

**Donna Jean Brogan** is an American statistician and professor emeritus of statistics at Emory University. Brogan has worked in biostatistical research in the areas of women's health, mental health and psychosocial health statistics, statistics on breast cancer, and analysis of complex survey data.

**Anne Lester Hudson** is an American mathematician and mathematics educator. Her research specialty is the theory of topological semigroups; she is also known for her skill at mathematical problem-solving, and has coached students to success in both the International Mathematical Olympiad and the William Lowell Putnam Mathematical Competition. She is a professor emeritus at the Georgia Southern University-Armstrong Campus.

**Adesoji O. Adelaja** is an academic and John A. Hannah Distinguished Professor in Land Policy at Michigan State University.

**James A. Morrow** is an American mathematician and professor emeritus of mathematics at the University of Washington in Seattle, Washington. His research interests shifted from several complex variables and differential geometry to discrete inverse problems in the middle of his career.

- ↑ Ding, Jiu (September 16, 2012). "The Biography of Tien-Yien Li (1945 - )" (PDF). Archived from the original (PDF) on September 16, 2012. Retrieved December 20, 2022.
- ↑ Richeson, David (March 2, 2022). "How We Can Make Sense of Chaos".
*Quanta Magazine*. Retrieved December 19, 2022.

- T. Y. Li, and J. A. Yorke,
*Period Three Implies Chaos*, American Mathematical Monthly**82**, 985 (1975) - Celebration of Life Dr. Tien-Yien Li (1945-2020)
- Dr. Tien-Yien Li

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