100_sphere.png I am a Postdoctoral Fellow at the Institute of Mathematics, Statistics, and Scientific Computing of the State University of Campinas. My research interests include numerical optimization, linear and nonlinear programming, operations research and combinatorial optimization. If you want to contact me, please send an e-mail to .

Publications

E. G. Birgin and R. D. Lobato. Large-scale packing of ellipsoids. Submitted (2017).
[Abstract] [PDF] [PS]

E. G. Birgin, R. D. Lobato and J. M. Martínez. A nonlinear programming model with implicit variables for packing ellipsoids. Journal of Global Optimization (2017) 68, 467–499.
[Abstract] [PDF] [PS] [DOI] [Code]

E. G. Birgin, R. D. Lobato and J. M. Martínez. Constrained optimization with integer and continuous variables using inexact restoration and projected gradients. Bulletin of Computational Applied Mathematics (2016) 4, 55–70.
[Abstract] [PDF] [PS]

E. G. Birgin, R. D. Lobato and J. M. Martínez. Packing ellipsoids by nonlinear optimization. Journal of Global Optimization (2016) 65, 709–743.
[Abstract] [PDF] [PS] [DOI] [Code]

E. G. Birgin, R. D. Lobato and R. Morabito. Generating unconstrained two-dimensional non-guillotine cutting patterns by a recursive partitioning algorithm. Journal of the Operational Research Society (2012) 63, 183–200.
[Abstract] [PDF] [PS] [DOI]

E. G. Birgin and R. D. Lobato. Orthogonal packing of identical rectangles within isotropic convex regions. Computers & Industrial Engineering (2010) 59, 595–602.
[Abstract] [PDF] [PS] [DOI] [Code]

E. G. Birgin, R. D. Lobato and R. Morabito. An effective recursive partitioning approach for the packing of identical rectangles in a rectangle. Journal of the Operational Research Society (2010) 61, 306–320.
[Abstract] [PDF] [PS] [DOI] [Code]

Projects

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