User profiles for R. Brummelhuis

Raymond Brummelhuis

professeur de mathématiques, université de Reims Champagne Ardenne
Verified email at univ-reims.fr
Cited by 725

Spectral estimates around a critical level

R Brummelhuis, T Paul, A Uribe - 1995 - projecteuclid.org
… Since, in particular, the differential of H is zero in directions tangent to (R), the connected …
Reasoning locally near a point of (R), we begin by introducing coordinates (z’, z") in phase …

A semi-classical trace formula for Schrödinger operators

R Brummelhuis, A Uribe - Communications in Mathematical Physics, 1991 - Springer
LetS ℏ =−ℏΔ+V, withV smooth. If 0<E 2 <lim infV(x), the spectrum ofS ℏ nearE 2 consists (for
ℏ small) of finitely-many eigenvalues,λ j (ℏ). We study the asymptotic distribution of these …

Scattering amplitude for Dirac operators

R Brummelhuis, J Nourrigat - Communications in partial differential …, 1999 - Taylor & Francis
… We say that a real number E is non trapping for A+ if there exists a neighborhood W of E
with the following property : for all R and R' > 0, there exists T = T(R. R') > 0 such that we have …

A radial basis function scheme for option pricing in exponential Lévy models

R Brummelhuis, RTL Chan - Applied Mathematical Finance, 2014 - Taylor & Francis
… a risk-free bond earning interest at a constant rate of r. For a general Lévy process, the market
… In the tables below, we will write R ∞ if we use the sup-norm and R 2 if we use the mean …

The ground state energy of relativistic one-electron atoms according to Jansen and Hess

R Brummelhuis, H Siedentop, E Stockmeyer - Documenta Mathematica, 2002 - ems.press
… We now bound the integral operator K1 − K0 by a multiplication operator: First pick α ∈ R.
Then we have — using the symmetry of F(µ, p, p , p ) in p and p for fixed p — …

Principal component value at risk

R Brummelhuis, A Cordoba, M Quintanilla… - Mathematical …, 2002 - Wiley Online Library
… that 0 jPfx : Q x À v ` ÀR2g for sufficiently large R, R2 b ÀQ v , we can write I R2 for those
R as … We can consider R n R f0g  Wk as a fiberbundle over Rk, with projection p given by …

Exponential decay in the semi–classical limit for eigenfunctions of schrödinger operators with magnetic fields and potentials which degenerate at infinity

R Brummelhuis - Communications in partial differential equations, 1991 - Taylor & Francis
… lira denote the inner product and the norm of L2(R,dx). Hence, applying (2.3) to the second
… Also, in the proof of 1.3 we everywhere replace Wh(x; R) by the smaller function c . hlB(x)(. …

Time-scaling of value-at-risk in GARCH (1, 1) and AR (1)-GARCH (1, 1) processes

R Brummelhuis, R Kaufmann - The Journal of Risk, 2007 - search.proquest.com
… not even an unequivocal relationship between volatility and one-day VaR in a weak-GARCH(1,1)
model, and it is far from clear which of the results from this paper or from Brummelhuis

Effective Hamiltonians for atoms in very strong magnetic fields

R Brummelhuis, P Duclos - Journal of mathematical physics, 2006 - pubs.aip.org
… where r j = ( x j , y j , z j ) ∊ R 3 are the coordinates of the j th electron, σ ⃗ j is its spin, and
∇ j is the gradient with respect to r j ⁠. Note that we have made the choice of 1 2 B ∧ r for the …

A microlocal F. and M. Riesz theorem with applications.

RGM Brummelhuis - Revista Matematica Iberoamericana, 1989 - eudml.org
top Consider, by way of example, the following F. and M. Riesz theorem for Rn: Let μ be a
finite measure on Rn whose Fourier transform μ* is supported in a closed convex cone which …