- Post Doctoral Fellowship in Graph Theory, University of Waterloo
and University of Calgary, 1970-1971
- Ph.D. in Graph Theory, University of Waterloo, Ontario, 1970
(Thesis supervisor: C.St.J.A. Nash-Williams)
- M.A. in Mathematics, University of Nebraska at Lincoln, 1967
- B.A. in Mathematics, University of Nebraska at Lincoln, 1965
(with minors in Chemistry, German, and Sociology)
- Præliminærskole Eksamen, Viborg Privat Realskole, Denmark, 1961
(I Danmark hed jeg Jay Jensen)
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