Mourad Boudjellal (avec Arnaud Ramsay), Ma mauvaise réputation,

Arnaud Echard: Adieu, ma soeur

D uring cytokinesis, the two daughter cells begin separating from each other through constriction of an actomyosin ring. The cells then remain connected via a narrow cytoplasmic intercellular bridge for several hours while the membrane is remodeled at the fi ssion site. Only then can they part ways. Arnaud Echard wants to know how cytokinesis is achieved and regulated. By leveraging his backgro...

Xavier Buff and Arnaud Chéritat

We prove the existence of quadratic polynomials having a Julia set with positive Lebesgue measure. We find such examples with a Cremer fixed point, with a Siegel disk, or with infinitely many satellite renormalizations.

Sir William Ramsay

Ramsay Hunt syndrome

The strict definition of the Ramsay Hunt syndrome is peripheral facial nerve palsy accompanied by an erythematous vesicular rash on the ear (zoster oticus) or in the mouth. J Ramsay Hunt, who described various clinical presentations of facial paralysis and rash, also recognised other frequent symptoms and signs such as tinnitus, hearing loss, nausea, vomiting, vertigo, and nystagmus. He explain...

Birth and Death Processes with Absorption Mourad

Spectral measures and transition probabilities of birth and death processes with A0 #o 0 are obtained as limite when Ao 0+ of the corresponding quantities. In pa,rticula th(, case of finite population is discussed in full detail. Pure birth and death processes are used to derive an inequality for Dirichlet polynomials.