Molecular networks guide the biochemistry of a living cell on multiple levels: Its metabolic
and signaling pathways are shaped by the network of interacting proteins, whose production, …

We develop a framework to discuss the stability of epigenetic states as first exit problems in
dynamical systems with noise. We consider in particular the stability of the lysogenic state of …

A simple dynamical model for Darwinian evolution on its slowest time scale is analyzed. Its
mean field theory is formulated and solved. A random neighbor version of the model is …

A new class of interface growth models is proposed, where global equilibration of the driving
force is achieved between each local deposition. Two such models are studied numerically, …

A simple and robust model of biological evolution of an ecology of interacting species is
introduced. The model self-organizes into a critical steady state with intermittent coevolutionary …

This review is devoted to the Statistical Multifragmentation Model (SMFM) developed in
Copenhagen more than 10 years ago and widely used now for interpreting experimental data on …

Chromosomal regions can adopt stable and heritable alternative states resulting in bistable
gene expression without changes to the DNA sequence. Such epigenetic control is often …

A general scheme for detecting and analyzing topological patterns in large complex
networks is presented. In this scheme the network in question is compared with its properly …

We present a simple mathematical model of biological macroevolution. The model describes
an ecology of adapting, interacting species. The environment of any given species is …

Traffic is constrained by the information involved in locating the receiver and the physical
distance between sender and receiver. We here focus on the former, and investigate traffic in …