Con este artículo esperamos establecer la relación entre teología y poesía basada en el poder de lo simbólico. Para abordar tal objetivo debemos considerar siguiente pregunta: ¿De qué manera se puede alojar trascendente inmanente? Creemos que es carácter simbólico nos permite hablar esta presencia inmanente. Paul Tillich, los símbolos dirigen por encima sí mismos hacia algo más. Los símbolos, a...

After 15 years of unsuccessful cryptanalysis attempts by the research community, Grassl et al. have recently broken the collision resistance property of the TillichZémor hash function. In this paper, we extend their cryptanalytic work and consider the preimage resistance of the function. We present two algorithms for computing preimages, each algorithm having its own advantages in terms of spee...

Marcel survived the genocide. So did Monique. Their five children were not so fortunate. With a resilience almost super-human, Marcel and Monique rebuilt their lives, Marcel resuming his work with UNICEF in successive duty postings in Africa and Europe. I remember meeting with him in Bamako a few years back. There was a funding shortfall for the measles campaign. He was all business, pulling ou...

We consider a generalization of the Gabriel graph, the witness Gabriel graph. Given a set of vertices P and a set of witness points W in the plane, there is an edge ab between two points of P in the witness Gabriel graph GG−(P,W ) if and only if the closed disk with diameter ab does not contain any witness point (besides possibly a and/or b). We study several properties of the witness Gabriel g...

As a graduate student, I learned to question assumptions. Michael Barbour taught us to challenge the assumption that we could ever really know the "native" condition of California. Marcel Rejmánek taught me to ask, "Is your invasives problem truly growing over time, or does it just look that way because you are doing a better job of measuring it?" These questions underlie my develop­ ment of mo...