Misplaced Pages

Peter B. Shalen (born c. 1946) is an American mathematician, working primarily in low-dimensional topology. He is the "S" in JSJ decomposition.

Life

He graduated from Stuyvesant High School in 1962, and went on to earn a B.A. from Harvard College in 1966 and his Ph.D. from Harvard University in 1972. After posts at Columbia University, Rice University, and the Courant Institute, he joined the faculty of the University of Illinois at Chicago.

Shalen was a Sloan Foundation Research Fellow in mathematics (1977—1979). In 1986 he was an invited speaker at the International Congress of Mathematicians in Berkeley, California. He was elected as a member of the 2017 class of Fellows of the American Mathematical Society "for contributions to three-dimensional topology and for exposition".

Work

His work with Marc Culler related properties of representation varieties of hyperbolic 3-manifold groups to decompositions of 3-manifolds. Based on this work, Culler, Cameron Gordon, John Luecke, and Shalen proved the cyclic surgery theorem. An important corollary of the theorem is that at most one nontrivial Dehn surgery (+1 or −1) on a knot can result in a simply-connected 3-manifold. This was an important piece of the Gordon–Luecke theorem that knots are determined by their complements. This paper is often referred to as "CGLS".

With John W. Morgan, he generalized his work with Culler, and reproved several foundational results of William Thurston.

Selected publications

• Jaco, William H. & Shalen, Peter B. (1979). Seifert fibered spaces in 3-manifolds. Providence: American Mathematical Society. ISBN 0-8218-2220-9.
• Shalen, Peter B. Separating, incompressible surfaces in 3-manifolds. Inventiones Mathematicae 52 (1979), no. 2, 105–126.
• Culler, Marc; Shalen, Peter B. Varieties of group representations and splittings of 3-manifolds. Annals of Mathematics (2) 117 (1983), no. 1, 109–146.
• Culler, Marc; Gordon, C. McA.; Luecke, J.; Shalen, Peter B. Dehn surgery on knots. Annals of Mathematics (2) 125 (1987), no. 2, 237–300.
• Morgan, John W.; Shalen, Peter B. Valuations, trees, and degenerations of hyperbolic structures. I. Ann. of Math. (2) 120 (1984), no. 3, 401–476.
• Morgan, John W.; Shalen, Peter B. Degenerations of hyperbolic structures. II. Measured laminations in 3-manifolds. Annals of Mathematics (2) 127 (1988), no. 2, 403–456.
• Morgan, John W.; Shalen, Peter B. Degenerations of hyperbolic structures. III. Actions of 3-manifold groups on trees and Thurston's compactness theorem. Annals of Mathematics (2) 127 (1988), no. 3, 457–519.

References

1. "Stuyvesant Math Team". Archived from the original on 2007-10-01. Retrieved 2007-10-31.
2. Curriculum Vitæ of Peter B. Shalen Retrieved 9 November 2010
3. Sloan Research Fellowships
4. Shalen, P. B. (1986). "Representations of 3-manifold groups and applications in topology". Proceedings of the International Congress of Mathematicians, August 3–11, 1986, Berkeley, California. Vol. 1. pp. 607–614.
5. 2017 Class of the Fellows of the AMS, American Mathematical Society, retrieved 2016-11-06.

External links

• Shalen's home page at UIC
• Art Rothstein's Stuyvesant Math Team page
• Peter Shalen at the Mathematics Genealogy Project

This article about an American mathematician is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• 1940s births
• 20th-century American mathematicians
• 21st-century American mathematicians
• American topologists
• Stuyvesant High School alumni
• Harvard College alumni
• Columbia University faculty
• Rice University faculty
• University of Illinois Chicago faculty
• Living people
• Courant Institute of Mathematical Sciences faculty
• Fellows of the American Mathematical Society
• Mathematicians from New York (state)
• American mathematician stubs