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- Ralph Howard
- 2003

In 1926 Nakajima ( = Matsumura) showed that any convex body in R3 with constant width, constant brightness, and boundary of class C2 is a ball. We show that the regularity assumption on the boundaryâ€¦ (More)

- Ralph Howard
- 1993

Let G be a Lie group and K a compact subgroup of G. Then the homogeneous space G/K has an invariant Riemannian metric and an invariant volume form Î©G. Let M and N be compact submanifolds of G/K, andâ€¦ (More)

- Paul Goodey, Ralph Howard, Mark Reeder
- 1990

Stationary processes of k-flats in Ed can be thought of as point processes on the Grassmannian Lk of k-dimensional subspaces of Ed . If such a process is sampled by a (d âˆ’ k + j)-dimensional space Fâ€¦ (More)

- K. Ackerstaff, Ghanayem Alexander, +272 authors C. Shepherd-Themistocleous
- 1997

We present measurements of triple gauge boson coupling parameters using data recorded by the OPAL detector at LEP2 at a centre-of-mass energy of 172 GeV. A total of 120W-pair candidates has beenâ€¦ (More)

In [3], Harrell showed how an analytic approach could be used to obtain a well-known Euclidean inequality of plane convex geometry â€“ the BlaschkeLebesgue inequality. In this article we show how aâ€¦ (More)

Let (M, g) be a time oriented Lorentzian manifold and d the Lorentzian distance on M . The function Ï„(q) := supp<q d(p, q) is the cosmological time function of M , where as usual p < q means that pâ€¦ (More)

We study fine differentiability properties of horizons. We show that the set of end points of generators of a n-dimensional horizon H (which is included in a (n+1)-dimensional space-time M) hasâ€¦ (More)

The comparison theory for the Riccati equation satisfied by the shape operator of parallel hypersurfaces is generalized to semiâ€“Riemannian manifolds of arbitrary index, using oneâ€“sided bounds on theâ€¦ (More)

- Giovanni Abbiendi, Chris Ainsley, +267 authors Ljiljana Zivkovic
- 1991

A study of b quark hadronisation is presented using inclusively reconstructed B hadrons in about four million hadronic Z decays recorded in 1992â€“2000 with the OPAL detector at LEP. The data areâ€¦ (More)

- Giovanni Abbiendi, Chris Ainsley, +263 authors Ljiljana Zivkovic
- 2002

We have analysed the data collected by OPAL at centre-of-mass energies between 189 and 209 GeV searching for Higgs boson candidates from the process ee â†’ hZ followed by the decay of h â†’ AA where A isâ€¦ (More)