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James Earl Baumgartner

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Covid-19
Nationality  American
Died  December 28, 2011
Institutions  Dartmouth College
Fields  Mathematics

Name  James Baumgartner
Role  Mathematician
Notable students  Alan D. Taylor
James Earl Baumgartner
Born  March 23, 1943 Wichita, Kansas (1943-03-23)
Alma mater  University of California, Berkeley
Doctoral students  Jean Larson Alan D. Taylor Stanley Wagon
Education  University of California, Berkeley
Similar People  Alan D Taylor, Robert Lawson Vaught, George III of the United Ki

Doctoral advisor  Robert Lawson Vaught

James Earl Baumgartner (March 23, 1943 – December 28, 2011) was an American mathematician who worked in set theory, mathematical logic and foundations, and topology.

Baumgartner was born in Wichita, Kansas, began his undergraduate study at the California Institute of Technology in 1960, then transferred to the University of California, Berkeley, from which he received his PhD in 1970 from for a dissertation entitled Results and Independence Proofs in Combinatorial Set Theory. His advisor was Robert Vaught. He became a professor at Dartmouth College in 1969, and there spent his entire career.

One of Baumgartner's results is the consistency of the statement that any two 1 -dense sets of reals are order isomorphic (a set of reals is 1 -dense if it has exactly 1 points in every open interval). With András Hajnal he proved the result (Baumgartner–Hajnal theorem) that the partition relation ω 1 ( α ) n 2 holds for α < ω 1 , n < ω . He died of a heart attack in 2011.

Selected publications

  • Baumgartner, James E., A new class of order types, Annals of Mathematical Logic, 9:187–222, 1976
  • Baumgartner, James E., Ineffability properties of cardinals I, Infinite and Finite Sets, Keszthely (Hungary) 1973, volume 10 of Colloquia Mathematica Societatis János Bolyai, pages 109–130. North-Holland, 1975
  • Baumgartner, James E.; Harrington, Leo; Kleinberg, Eugene, Adding a closed unbounded set, Journal of Symbolic Logic, 41(2):481–482, 1976
  • Baumgartner, James E., Ineffability properties of cardinals II, Robert E. Butts and Jaakko Hintikka, editors, Logic, Foundations of Mathematics and Computability Theory, pages 87–106. Reidel, 1977
  • Baumgartner, James E.; Galvin, Fred, Generalized Erdős cardinals and 0#, Annals of Mathematical Logic 15, 289–313, 1978
  • Baumgartner, James E.; Erdős, Paul; Galvin, Fred; Larson, J., Colorful partitions of cardinal numbers, Can. J. Math. 31, 524–541, 1979
  • Baumgartner, James E.; Erdős, Paul; Higgs, D., Cross-cuts in the power set of an infinite set, Order 1, 139–145, 1984
  • Baumgartner, James E. (Editor), Axiomatic Set Theory (Contemporary Mathematics, Volume 31), 1990
  • References

    James Earl Baumgartner Wikipedia


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