TREFOR LLEWELLYN BOWEN

Commentary / Llewellyn : Elaborative encoding

Although the analogy between dreams and ancient mnemotechniques is tempting because they share several phenomenological characteristics, this analogy is superficial at a closer look. Unlike mneomotechnically encoded material, rapid eye movement (REM) dreams are inherently difficult to remember, do not usually allow conscious subsequent retrieval of all interconnected elements, and have been fou...

A Tribute to Karl Llewellyn

Extreme Bowen-York initial data

The Bowen-York family of spinning black hole initial data depends essentially on one, positive, free parameter. The extreme limit corresponds to making this parameter equal to zero. This choice represents a singular limit for the constraint equations. We prove that in this limit a new solution of the constraint equations is obtained. These initial data have similar properties to the extreme Ker...

Generalized Bowen–York Initial Data

A class of vacuum initial-data sets is described which are based on certain expressions for the extrinsic curvature first studied and employed by Bowen and York. These expressions play a role for the momentum constraint of General Relativity which is analogous to the role played by the Coulomb solution for the Gauss-law constraint of electromagnetism.

Maladie de Bowen pigmentée génitale

Il s'agit d'un patient de 59 ans, qui présentait de multiples lésions génitales évoluant depuis 2 ans. L'examen a objectivé 2 tumeurs verruqueuses superficielles, à bordure pigmentée et à surface végétante, siégeant respectivement au niveau sus-pubien et sur le pli inguinal droit; une macule pigmentée hétérogène au niveau hypogastrique, et de multiples plaques noirâtres homogènes à surface verr...