Ernest R. Davidson, born October 12, 1936 in

Terre Haute Terre Haute ( ) is a city in and the county seat of Vigo County, Indiana, United States, about 5 miles east of the state's western border with Illinois. As of the 2010 census, the city had a population of 60,785 and its metropolitan area had a ...

Indiana Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th ...

, was Professor of Chemistry,

University of Washington The University of Washington (UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington. Founded in 1861, Washington is one of the oldest universities on the West Coast; it was established in Seatt ...

Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest region o ...

, WA, US (1961 - 1984, 2002 - 2020) and

Indiana University Indiana University (IU) is a system of public universities in the U.S. state of Indiana. Campuses Indiana University has two core campuses, five regional campuses, and two regional centers under the administration of IUPUI. *Indiana Universi ...

, Bloomington, IN, US (1984 - 2002). He graduated from

Wiley High School Terre Haute South Vigo High School is a public high school located in Terre Haute, Indiana. As the name implies, the school's district covers the southern portion of Terre Haute, as well as most of southern Vigo County, the county in which Terre ...

, Terre Haute and

Rose Polytechnic Institute A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and tens of thousands of cultivars. They form a group of plants that can be ...

(BS Chemical Engineering), Terre Haute, and

(PhD Theoretical Chemistry), Bloomington, IN. His name is associated with both the Davidson correction and the " Davidson diagonalization" method which he applied to

configuration interaction Configuration interaction (CI) is a post-Hartree–Fock linear variational method for solving the nonrelativistic Schrödinger equation within the Born–Oppenheimer approximation for a quantum chemical multi-electron system. Mathematical ...

methods. He is the author of over 400 publications, including ''Reduced Density Matrices in Quantum Chemistry'', Academic Press, 1976. He has been awarded many honors, including member of the

International Academy of Quantum Molecular Science The International Academy of Quantum Molecular Science (IAQMS) is an international scientific learned society covering all applications of quantum theory to chemistry and chemical physics. It was created in Menton in 1967. The founding members we ...

(1981) and Fellow of the

American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...

(1985) and the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nat ...

(1987). In 2001, he was awarded the

National Medal of Science The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral and social scienc ...

.National Science Foundation - The President's National Medal of Science
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References

His International Academy of Quantum Molecular Science page

External links

His home page containing all his publications
1936 births Living people Members of the United States National Academy of Sciences National Medal of Science laureates Members of the International Academy of Quantum Molecular Science Fellows of the American Physical Society Theoretical chemists Rose–Hulman Institute of Technology alumni Schrödinger Medal recipients Computational chemists {{US-chemist-stub