Thomas A. Garrity

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Thomas A. Garrity
Born (1959-04-25) April 25, 1959 (age 65)
Academic background
Education
Thesis On Ample Vector Bundles and Negative Curvature (1986)
Doctoral advisor William Fulton

Thomas Anthony Garrity (born 25 April 1959) [1] is an American mathematician. He teaches at Williams College, where he is the Webster Atwell Class of 1921 Professor of Mathematics. [2]

Contents

Early life and education

Thomas Anthony Garrity was born in 1959. [1] He completed his bachelor's degree in mathematics at the University of Texas at Austin in 1981. [2] He attended Brown University for doctoral studies, completing a PhD in mathematics in 1986 under the supervision of professor William Fulton. Garrity's doctoral thesis was titled On Ample Vector Bundles and Negative Curvature. [3]

Career

Garrity is currently a professor of mathematics at Williams College, where he has taught since 1989. [4]

Research

In 1989, Garrity and three other collaborators found an algorithm in NC to factorize rational polynomials over the complex numbers. [5]

In 1991, Garrity discovered the concept of "geometric continuity", which generalizes several other notions of continuity for both explicit and implicit surfaces. [6]

In 1999, Garrity came up with the concept of a simplex sequence, which is an alternate approach to the Hermite problem (of which the Jacobi-Perron algorithm is yet another approach). [7] For the case of ordered pairs, if the simplex sequence is eventually periodic, then the two numbers must be of degree at most three. [7]

Recognition

Garrity was a 2004 recipient of the Deborah and Franklin Haimo Awards for Distinguished College or University Teaching of Mathematics. [8]

Bibliography

His books include:

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References

  1. 1 2 Birth year from Library of Congress catalog entry, retrieved 2024-04-05
  2. 1 2 "Thomas Garrity". Mathematics & Statistics. Retrieved February 20, 2023.
  3. Garrity, Thomas (December 2021). "Curriculum Vitae of Thomas A. Garrity" (PDF).
  4. "Thomas Garrity".
  5. Bajaj, Chanderjit; Canny, John; Garrity, Thomas; Warren, Joe (1989). "Factoring Rational Polynomials over the Complex Numbers" (PDF). SIAM Journal on Computing. 22 (2): 318–331. doi:10.1137/0222024. ISSN   0097-5397.
  6. Garrity, Thomas; Warren, Joe (February 1991). "Geometric continuity". Computer Aided Geometric Design. 8 (1): 51–65. doi:10.1016/0167-8396(91)90049-h. ISSN   0167-8396.
  7. 1 2 Garrity, Thomas (2001). "On periodic sequences for algebraic numbers". Journal of Number Theory. 88 (1): 86–103. arXiv: math/9906016 . doi:10.1006/jnth.2000.2608. MR   1825992.
  8. "MAA Awards Presented in Phoenix" (PDF). Notices of the American Mathematical Society. 51 (5): 544–545. May 2004.