L. Pietronero

Publications402
h-index49
Citations10,340
Highly Influential Citations317
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On the maximum mass of a neutron star
On the basis of Einstein's theory of relativity, the principle of causality, and Le Chatelier's principle, it is here established that the maximum mass of the equilibrium configuration of a neutron…
A New Metrics for Countries' Fitness and Products' Complexity
TLDR
It is shown that a non-linear iteration is necessary to bound the complexity of products by the fitness of the less competitive countries exporting them, and the correct and simplest approach to measure the competitiveness of countries is the one presented in this work.
Fractal Dimension of Dielectric Breakdown
It is shown that the simplest nontrivial stochastic model for dielectric breakdown naturally leads to fractal structures for the discharge pattern. Planar discharges are studied in detail and the…
Memorie della Società Astronomica Italiana Supplementi - Vol. 1 Computational Astrophysics in Italy: Methods and Tools Prima Riunione Nazionale
A new, momentum preserving fast Poisson solver for N-body systems sharing effective O(N) computational complexity, has been recently developed by Dehnen (2000, 2002). We have implemented the proposed…
Semiotic dynamics and collaborative tagging
TLDR
A stochastic model of user behavior embodying two main aspects of collaborative tagging, a frequency-bias mechanism related to the idea that users are exposed to each other's tagging activity and a notion of memory, or aging of resources, in the form of a heavy-tailed access to the past state of the system.
The fractal structure of the universe: Correlations of galaxies and clusters and the average mass density
The Heterogeneous Dynamics of Economic Complexity
TLDR
It is argued that a recently introduced non-monetary metrics for country competitiveness (fitness) allows for quantifying the hidden growth potential of countries by the means of the comparison of this measure for intangible assets with monetary figures, such as GDP per capita.
Measuring the Intangibles: A Metrics for the Economic Complexity of Countries and Products
TLDR
A detailed comparison of the results of this approach directly with those of the Method of Reflections by Hidalgo and Hausmann is presented, showing the better performance of the method and a more solid economic, scientific and consistent foundation.
Universal scaling relations in food webs
TLDR
It is proposed to describe food webs as transportation networks by extending to them the concept of allometric scaling (how branching properties change with network size), and it is shown that, whereas the number of loops varies significantly across real webs, spanning trees are characterized by universal scaling relations.
Explaining the uneven distribution of numbers in nature: the laws of Benford and Zipf
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