Carlos Ponce Sangines, Godfather of Bolivian Archaeology

Intra - regional Internet connectivity still an ongoing assignment $ Carlos Silva Ponce de León

A review of market trends impacting the development of the applications architecture of the Internet in general is presented, followed by an historical review of the subject and an analysis of regulatory aspects. It concludes with a review of the state of backbone interconnection in Latin America. r 2005 Elsevier Ltd. All rights reserved.

The Kato-ponce Inequality

In this article we revisit the inequalities of Kato and Ponce concerning the L norm of the Bessel potential J = (1 − ∆) (or Riesz potential D = (−∆)) of the product of two functions in terms of the product of the L norm of one function and the L norm of the the Bessel potential J (resp. Riesz potential D) of the other function. Here the indices p, q, and r are related as in Hölder’s inequality ...

Sir John Gurdon: Godfather of cloning

S ir John Gurdon's famous frog cloning experiments of the 1960s and '70s answered a question that had been hanging over cell biologists since before the turn of the century: are the cells of an adult organism genetically identical to the fertilized egg from which they are derived? Briggs and King in the early '50s suggested that cells' genetic material is irreversibly altered as they begin to d...

Aristotle, godfather of evidence-based medicine

of Carlos Kenig

The classical unique continuation theorem, which originates in the work of Carleman, in its simplest form is the following: Proposition: Assume that ∆u = V u in {|x| < 10}, with |u| ≤ C 0 and ||V || L ∞ ≤ M. If |u(x)| ≤ C N |x| N , for all N ≥ 0, then u ≡ 0. In order to establish this Proposition, Carleman developed a method, the " method of Carleman estimates " , which still permeates the subj...