David Kirkpatrick

Professor Emeritus
Email: kirk [at] cs [dot] ubc [dot] ca
Office: ICCS X461
Phone: (none)

Curriculum Vitae

B.Sc., University of British Columbia (1970); Ph.D., Univ. of Toronto (1974); Visiting Assistant Professor, Cornell (1974-75); Assistant Professor, Simon Fraser University (1975-78); Assistant Professor, University of British Columbia (1978); Associate Professor, University of British Columbia (1982); Professor, University of British Columbia (1986-); Fellow, British Columbia Advanced Systems Institute (1988-); Associate Dean, Faculty of Graduate Studies (1996-98).


combinatorial algorithms
computational complexity
computational geometry
parallel computation
distributed computation


My research deals with topics in theoretical computer science. I am particularly interested in computational complexity, specifically the determination or characterization of the inherent computational difficulty of solving certain specific problems - or families of problems - on realistic models of computation.

The problems that I am concerned with are fundamental combinatorial problems (including sorting and a number of basic graph theoretic problems, such as graph matchings and their generalizations) and geometric problems (including convex hulls, Voronoi diagrams, point location, geometric intersection, facility location, and motion planning) that have widespread applications.

While much of my research is based on a standard sequential deterministic model of computation, I am also interested in both parallel and distributed models of computation and the use of probabilistic algorithms.

Selected Publications

Kirkpatrick, D. G., "Generalizing Ham Sandwich Cuts to Equitable Subdivisions", Discrete and Computational Geometry, to appear. (With S. Bespamyatnikh and J. Snoeyink).

Kirkpatrick, D. G. "Optimal Algorithms for Probabalistic Solitude Detection on Anonymous Rings", Journal of Algorithms, 23, 1997, pp. 291-328. (With L. Higham, K. Abrahamson And A. Adler).

Kirkpatrick, D. G. "Rounding in Symmetric Matrices and Undirected Graphs", Discrete Applied Mathematics, 70, 1996, pp. 1-21. (With P. Hell).

Kirkpatrick, D. G. "A Compact Piecewise-Linear Voronoi Diagram for Convex Sites in the Plane", Discrete and Computational Geometry, 15, 1996, pp. 73-105. (With M. Mcallister and J. Snoeyink).

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