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Euler e os números pentagonais
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Ensino de Ciências Naturais e MatemáticaEnsino de Ciências Naturais e Matemática, 2011-10-26)
The present investigation includes a study of Leonhard Euler and the pentagonal
numbers is his article Mirabilibus Proprietatibus Numerorum Pentagonalium - E524.
After a brief review of the life and work of Euler, we analyze ...
Compaction and arching in tapped pentagon deposits
(Springer Verlag Berlín, 2008-11-12)
We simulate the process of compaction under vertical tapping for a two-dimensional system of particles deposited in a rectangular box. The particles consist in regular pentagons and our main objective is to analyze the ...
Structure of force networks in tapped particulate systems of disks and pentagons I Clusters and loops
(American Physical Society, 2018)
Structure of force networks in tapped particulate systems of disks and pentagons II Persistence analysis
(American Physical Society, 2018)
Energetics and stability of vacancies in carbon nanotubes
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
In this work we present ab initio calculations of the formation energies and stability of different types of multi-vacancies in carbon nanotubes. We demonstrate that, as in the case of graphene, the reconstruction of the ...
Big bang methodology applied to atomic clusters
(2011)
An implementation of a novel strategy for cluster geometry optimization, using a stochastic method, is applied. This algorithm is based on the spirit of Big Bang theory. The strategy consists on a three-step procedure; a ...