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Publications Influence

On the variation in the cohomology of the symplectic form of the reduced phase space

- J. J. Duistermaat, G. Heckman
- Mathematics
- 1 June 1982

is called the momentum mapping of the Hamiltonian T-action. Given (1.1), the condition (1.2) just means that T acts along the fibers of J. For the basic definitions and properties of non-commutative… Expand

657 57- PDF

Monodromy for the hypergeometric functionnFn−1

- F. Beukers, G. Heckman
- Mathematics
- 1 June 1989

La fonction hypergeometrique. Le groupe hypergeometrique. La forme hermitienne invariante. Le cas imprimitif. Theorie de Galois differentielle. Fonctions hypergeometriques algebriques

290 44

Root systems and hypergeometric functions. I

- G. Heckman, E. M. Opdam
- Mathematics
- 1988

On considere les systemes dynamiques d'hamiltoniens: H=∑ i=1 n p i 2 /2+g∑ i<j (q i −q j ) −2 et H=∑ i=1 n p i 2 /2+g∑ i<j sin −2 (q i −q j ). On etudie la resolution spectrale simultanee de… Expand

374 33- PDF

Projections of orbits and asymptotic behavior of multiplicities for compact connected Lie groups

- G. Heckman
- Mathematics
- 1 June 1982

173 16

An elementary approach to the hypergeometric shift operators of Opdam

- G. Heckman
- Mathematics
- 1 December 1991

146 13- PDF

Geometric Structures on the Complement of a Projective Arrangement

- W. Couwenberg, G. Heckman, E. Looijenga
- Mathematics
- 24 November 2003

Consider a complex projective space with its Fubini-Study metric. We study certain one parameter deformations of this metric on the complement of an arrangement (= finite union of hyperplanes) whose… Expand

47 9- PDF

The volume of hyperbolic Coxeter polytopes of even dimension

- G. Heckman
- Mathematics
- 26 June 1995

Let H denote hyperbolic space of dimension n, and let S be an index set for a finite collection of open half spaces H s in H n bounded by codimension one hyperplanes Hs. We assume that for all… Expand

17 4- PDF

On the Regularization of the Kepler Problem

- G. Heckman, T. D. Laat
- Mathematics, Physics
- 21 July 2010

We show that for the Kepler problem the canonical Ligon-Schaaf regularization map can be understood in a straightforward manner as an adaptation of the Moser regularization. In turn this explains the… Expand

20 4- PDF

Root systems and hypergeometric functions III

- G. Heckman, E. M. Opdam
- Medicine
- 1988

A hand held, motor driven, wire joining tool is disclosed which includes two wire gripping jaws adapted to twist wires gripped therein by counter-rotating with respect to each other and a heater for… Expand

85 2- PDF

Matrix valued orthogonal polynomials for Gelfand pairs of rank one

- G. Heckman, Maarten van Pruijssen
- Mathematics
- 18 October 2013

In this paper we study matrix valued orthogonal polynomials of one variable associated with a compact connected Gelfand pair (G,K) of rank one, as a generalization of earlier work by Koornwinder and… Expand

25 2- PDF

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