Sociophysics Simulations IV: Hierarchies of Bonabeau et al

The model of Bonabeau et al explains social hierarchies as random: People keep a memory of recent fights, and winners have a higher probability to win again. The question of phase transition and the generalization from square lattices to networks is reviewed here.Comment: 7 pages including one figure and one program; 8th Granada Seminar, AIP Conf.Pro

Income Inequality in the 21st Century -- A biased summary of Piketty's Capital in the Twenty-First Century

Capital usually leads to income, and income is more accurately and easily measured. Thus we summarize income distributions in USA, Germany, etc.Comment: Two pages plus many figures. Revision corrects typos and enlarges captions 1 and

The Complexity of Biological Ageing

The present review deals with the computer simulation of biological ageing as well as its demographic consequences for industrialized societies.Comment: For Fractal 2004 proceedings, Vancouver; 12 pages of review including 6 fig

Sociophysics Simulations II: Opinion Dynamics

Individuals have opinions but can change them under the influence of others. The recent models of Sznajd (missionaries), of Deffuant et al. (negotiators), and of Krause and Hegselmann (opportunists) are reviewed here, while the voter and Ising models, Galam's majority rule and the Axelrod multicultural model were dealt with by other lecturers at this 8th Granada Seminar.Comment: 18 pages including 9 figs., for 8th Granada seminar (AIP Conf.Proc.