Ivan Rival, Date of Birth, Date of Death
TweetIvan Rival
Canadian mathematician and computer scientist
Date of Birth: 
About Ivan Rival
- Ivan Rival (March 15, 1947 – January 22, 2002 in Ottawa, Ontario, Canada) was a Canadian mathematician and computer scientist, a professor of mathematics at the University of Calgary and of computer science at the University of Ottawa.Rival's Ph.D.
- thesis concerned lattice theory.
- After moving to Calgary he began to work more generally with partially ordered sets, and to study fixed point theorems for partially ordered structures.
- He was a frequent organizer of conferences in order theory, and in 1984 he founded the journal Order.
- As a computer scientist at Ottawa, he shifted research topics, applying his expertise in order theory to the study of data structures, computational geometry, and graph drawing.Rival grew up in Hamilton, Ontario.
- He earned a bachelor's degree at McMaster University in 1969, and received his Ph.D.
- from the University of Manitoba in 1974 under the supervision of George Gratzer.
- After postdoctoral stints visiting Robert Dilworth at Caltech and Rudolf Wille at the Technische Hochschule Darmstadt, he took a faculty position at Calgary in 1975, and was promoted to full professor in 1981.
- In 1986, he moved to the University of Ottawa, where he became chair of the computer science department.Rival's doctoral students included Dwight Duffus, the Goodrich C.
- White Professor of Mathematics & Computer Science at Emory University.
- Duffus took over the editorship of Order after the retirement (as editor) of William T.
- Trotter , who took over the editorship from Rival.
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