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- C Edric, Bonnafé And, Matthew J Dyer
- 2008

Let (W, S) be a Coxeter system, let S = I ∪ J be a partition of S such that no element of I is conjugate to an element of J, let J be the set of W I-conjugates of elements of J and let W be the subgroup of W generated by J. We show that W = W ⋊ W I and that J is the canonical set of Coxeter generators of the reflection subgroup W of W. We also provide… (More)

BACKGROUND
Ciclesonide is a new inhaled corticosteroids licensed for the prophylactic treatment of persistent asthma in adults. Currently beclomethasone dipropionate, budesonide and fluticasone propionate are the most commonly prescribed inhaled corticosteroids for the treatment of asthma but there has been no systematic review comparing the effectiveness… (More)

- Matthew J Dyer
- 2012

The imaginary cone of a Kac-Moody Lie algebra is the convex hull of zero and the positive imaginary roots. This paper studies the imaginary cone for a class of root systems of general Coxeter groups W. It is shown that the imaginary cone of a reflection subgroup of W is contained in that of W , and that for irreducible infinite W of finite rank, the closed… (More)

OBJECTIVES
To pilot using a panel of members of the public to provide preference data via the Internet
METHODS
A stratified random sample of members of the general public was recruited and familiarized with the standard gamble procedure using an Internet based tool. Health states were periodically presented in "sets" corresponding to different conditions,… (More)

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