66 citations
4 papers
Mathematical model of COVID-19 intervention scenarios for Sao Paulo- Brazil
Osmar Pinto Neto, Jose Clark Reis, Ana Carolina Brisola Brizzi +8
An epidemiological compartmental model was used to simulate social distancing strategies to contain the COVID-19 pandemic and prevent a second wave in Sao Paulo, Brazil. Optimizati…
Stable Gravastars of Anisotropic Dark Energy
R. Chan, M. F. A. da Silva, P. Rocha +1
Dynamical models of prototype gravastars made of phantom energy are constructed, in which an infinitely thin spherical shell of a perfect fluid with the equation of state $p = (1-γ…
Stable and "bounded excursion" gravastars, and black holes in Einstein's theory of gravity
P. Rocha, R. Chan, M. F. A. da Silva +1
Dynamical models of prototype gravastars are constructed and studied. The models are the Visser-Wiltshire three-layer gravastars, in which an infinitely thin spherical shell of a p…
A Method to Tackle First Order Differential Equations with Liouvillian Functions in the Solution
L. G. S. Duarte, S. E. S. Duarte, L. A. C. P. da Mota
We present an algorithm to solve First Order Ordinary Differential Equations (FOODEs) extending the Prelle-Singer (PS) Method. The usual PS-approach miss many FOODEs presenting Lio…