peoplepill id: joel-hass
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The basics
Quick Facts
Intro
American mathematician
Places
Work field
Gender
Male
Education
University of California, Berkeley
Awards
Fellow of the American Mathematical Society
The details (from wikipedia)
Biography
Joel Hass is an American mathematician, a professor of mathematics and chair of the mathematics department at the University of California, Davis.
Biography
Hass received his Ph.D. from the University of California, Berkeley in 1981 under the supervision of Robion Kirby. He joined the Davis faculty in 1988.
In 2012 he became a fellow of the American Mathematical Society.
Research contributions
Hass is known for proving the equal-volume special case of the double bubble conjecture, for proving that the unknotting problem is in NP, and for giving an exponential bound on the number of Reidemeister moves needed to reduce the unknot to a circle.
Selected publications
- Research papers
- Freedman, Michael; Hass, Joel; Scott, Peter (1983), "Least area incompressible surfaces in 3-manifolds" (PDF), Inventiones Mathematicae, 71 (3): 609–642, Bibcode:1983InMat..71..609F, doi:10.1007/BF02095997, MR 0695910.
- Hass, Joel; Lagarias, Jeffrey C.; Pippenger, Nicholas (1999), "The computational complexity of knot and link problems", Journal of the ACM, 46 (2): 185–211, arXiv:math/9807016, doi:10.1145/301970.301971.
- Hass, Joel; Schlafly, Roger (2000), "Double bubbles minimize", Annals of Mathematics, Second Series, 151 (2): 459–515, arXiv:math/0003157, doi:10.2307/121042, MR 1765704.
- Hass, Joel; Lagarias, Jeffrey C. (2001), "The number of Reidemeister moves needed for unknotting", Journal of the American Mathematical Society, 14 (2): 399–428, arXiv:math/9807012, doi:10.1090/S0894-0347-01-00358-7, MR 1815217.
- Books
- Adams, Colin; Hass, Joel; Thompson, Abigail (1998), How to Ace Calculus: The Streetwise Guide, New York: W.H. Freeman and Company, ISBN 0-7167-3160-6.
- Adams, Colin; Hass, Joel; Thompson, Abigail (2001), How to Ace the Rest of Calculus: The Streetwise Guide, New York: W.H. Freeman and Company, ISBN 0-7167-4174-1.
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Frequently Asked Questions
FAQ
Who is Joel Hass?
Joel Hass is a mathematician known for his work in geometric and algebraic combinatorics. He is a professor of mathematics at the University of California, Davis.
What are some of Joel Hass's notable contributions to mathematics?
Joel Hass has made significant contributions to the fields of discrete and computational geometry, particularly in the area of knot theory. He has also contributed to the study of algebraic combinatorics and graph theory.
Where did Joel Hass receive his education?
Joel Hass received his undergraduate degree from Marquette University and his Ph.D. in mathematics from the University of Wisconsin–Madison.
What awards or honors has Joel Hass received?
Joel Hass has been recognized for his contributions to mathematics with several awards and honors. He was named a Fellow of the American Mathematical Society in 2012 and received the Mathematical Association of America's Deborah and Franklin Tepper Haimo Award for Distinguished College or University Teaching in 2014.
What is Joel Hass's current position?
Joel Hass is currently a professor of mathematics at the University of California, Davis, where he has been on the faculty since 1988.
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Joel Hass