History-dependent processes are ubiquitous in natural and social systems. Many such
stochastic processes, especially those that are associated with complex systems, become more …

Human language is the key evolutionary innovation that makes humans different from other
species. And yet, the fabric of language is tangled and all levels of description (from …

Hierarchy seems to pervade complexity in both living and artificial systems. Despite its
relevance, no general theory that captures all features of hierarchy and its origins has been …

Zipf’s law is the most common statistical distribution displaying scaling behavior. Cities,
populations or firms are just examples of this seemingly universal law. Although many different …

The complex relationship between structural and functional connectivity, as measured by
noninvasive imaging of the human brain, poses many unresolved challenges and open …

The power grid defines one of the most important technological networks of our times and
sustains our complex society. It has evolved for more than a century into an extremely huge …

Semantic memory is the subsystem of human memory that stores knowledge of concepts or
meanings, as opposed to life-specific experiences. How humans organize semantic …

… In Corominas-Murtra (2007) we present a detailed description of the criteria and rules
followed to pre-process the raw data. The main features of the parsing algorithm are indicated in …

Embryo morphogenesis is impacted by dynamic changes in tissue material properties, which
have been proposed to occur via processes akin to phase transitions (PTs). Here, we show …

The morphology and functionality of the epithelial lining differ along the intestinal tract, but
tissue renewal at all sites is driven by stem cells at the base of crypts 1 , 2 – 3 . Whether stem …