**Dick Herman Jacobus de Jongh** (born 19 October 1939, "Enschede)^{[1]} is a "Dutch "logician and "mathematician and a retired professor at the "University of Amsterdam. He received his "PhD degree in 1968 from the "University of Wisconsin–Madison under supervision of "Stephen Kleene with a dissertation entitled *Investigations on the Intuitionistic Propositional Calculus*.^{[2]} De Jongh is mostly known for his work on "proof theory, "provability logic and "intuitionistic logic. De Jongh is a member of the group collectively publishing under the "pseudonym "L. T. F. Gamut.^{[3]} In 2004, on the occasion of his retirement, the Institute for Logic, Language and Computation at the University of Amsterdam published a "festschrift in his honor.^{[4]}

## References[edit]

**^** Prof. dr. D.H.J. de Jongh, 1939 - at the "University of Amsterdam *Album Academicum* website
**^** Dick H. J. de Jongh at the "Mathematics Genealogy Project.
**^** Preface to *Logic, Language and Meaning*, by "L. T. F. Gamut, University of Chicago Press, 1991.
**^** *Vriendenboek ofwel Liber Amicorum ter gelegenheid van het afscheid van Dick de Jongh*, Institute for Logic, Language and Computation, University of Amsterdam, 2004, archived from the original on 2011-07-28 .

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