Researcher

Jon Barwise

Also known as Kenneth Jon Barwise, K. Jon Barwise

Jon Barwise (1942–2000) was an American mathematician, philosopher and logician who co-formulated situation semantics, an approach to language and information. He took a B.A. at Yale in 1963 and completed a Ph.D. in mathematics at Stanford in 1967 as a pupil of Solomon Feferman. In 1983 he and John Perry set out situation semantics in Situations and Attitudes, and he returned to Stanford to direct the Center for the Study of Language and Information. He began teaching at Indiana University in 1990, and in 1997 the American Philosophical Association selected him and John Etchemendy for three computer programs that teach formal logic. He was elected a Fellow of the American Academy of Arts and Sciences in 1999 and died in 2000.

Works
256
Citations
15,860
h-index
44

Publication numbers from OpenAlex, as of 15 October 2026.

Timeline

  1. 1942–1963

    A Yale degree in mathematics

    He is born in Independence, Missouri, and takes a B.A. in mathematics and philosophy at Yale in 1963.

  2. 1967

    A Stanford doctorate in mathematics

    In 1967 he completes a Ph.D. in mathematics at Stanford as a pupil of Solomon Feferman. There he starts research in infinitary logic.

  3. 1983

    Situations and Attitudes

    In 1983 he and John Perry formulate situation semantics, an approach to language and information, in Situations and Attitudes. He returns to Stanford in 1983 to direct the Center for the Study of Language and Information, and he becomes the first director of the Symbolic Systems Program.

  4. 1990–1997

    Indiana University Logic Program

    In 1990 he joins Indiana University as College Professor of computer science, mathematics and philosophy. From 1990 until 1997 he directs the Indiana University Logic Program.

  5. 1997

    Software for teaching logic

    The American Philosophical Association selects him and John Etchemendy in 1997 for three computer programs that teach formal logic.

  6. 1999

    American Academy fellowship

    He is elected a Fellow of the American Academy of Arts and Sciences in 1999.

  7. 2000

    Death announced by colleagues

    He dies in 2000, and his Indiana University colleagues announce the death.

  8. 2002

    The Barwise Prize

    A prize in his name is established in 2002 by the American Philosophical Association, in conjunction with its Committee on Philosophy and Computers.

Sources and credits

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  1. Jon Barwise - Wikipedia en.wikipedia.org. Checked 15 October 2026.
  2. Jon Barwise died March 5, 2000 math.uni-tuebingen.de. Checked 15 October 2026.
  3. Kenneth Jon Barwise: University Honors and Awards: Indiana University honorsandawards.iu.edu. Checked 15 October 2026.
  4. The Situation in Logic web.stanford.edu. Checked 15 October 2026.
  5. Educom Medal Awards Go to Six Educators -- THE Journal thejournal.com. Checked 15 October 2026.
  6. Barwise Prize - Wikipedia en.wikipedia.org. Checked 15 October 2026.