| 11/1998 |
Generating inexact-Newton methods using least change secant update procedures José Mario Martínez  rp-1998-11.pdf |
| 11/1998 |
Quais Anéis Moram em Álgebras de Dimensão Finita - I: Uma História de Uma Teoria Alexandre Ananin  rp-1998-11.gif, rp-1998-11.pdf |
| 10/1998 |
A View to Classification of Algebras Alexandre Ananin rp-1998-10.gif, rp-1998-10.pdf |
| 9/1998 |
Partitions with "[(N + 1)/2] copies of N" José Plínio O. Santos, Paulo Mondek rp-1998-9.gif, rp-1998-9.pdf |
| 8/1998 |
Derivation of Cubic Splines from Cubic Hermite Functions Saulo Pomponet Oliveira, Petrônio Pulino rp-1998-8.gif, rp-1998-8.pdf |
| 7/1998 |
The Center-Focus Problem and Reversibility Marco A. Teixeira, Jiazhong Yang rp-1998-7.gif, rp-1998-7.pdf |
| 6/1998 |
Controllability of discrete-time control systems on the symplectic group Carlos J. Braga Barros, Luiz A. B. San Martin Let x_{n+1} = exp(A+uB)x_{n} be a discrete-time control system on R^{2n}with A and B matrices in the symplectic Lie algebra sp(n, R). This papergives sufficient conditions for the global controllability of the system. Theseconditions are similar to those of [4]. rp-1998-6.pdf |
| 5/1998 |
On an Iterative Method for the Approximate Solution of an Initial and Boundary-Value Problem for a Generalized Boussinesq Model M. Drina Rojas-Medar, Marko A. Rojas-Medar In this work an iteractive method is proposed for finding the approximate solution of an initial and boundary problem for a nonstationary Generalized Boussinesq model for thermally driven convection. The model allows temperature dependent viscosity and thermal conductivity. We give also the convergence rate bounds for the propost method. rp-1998-5.pdf |
| 4/1998 |
Reconstruction Of A Compactly Supported Function From The Discrete Sampling Of Its Fourier Transform Jiahong Yin, Alvaro R. De Pierro, Musheng Wei We derive a new relation between the Discrete Fourier Transform of a discrete sampling set of a compactly supported function and its Fourier transform. From this relation we obtain a new window function. We then propose a new efficient algorithm to reconstruct the original function from the discrete sampling of its Fourier transform, which can adopt the fast Fourier transform and has much better accuracy than those in the literature. Several numerical experiments are also provided to demonstrate the results. rp-1998-4.pdf |
| 3/1998 |
On the number of control sets on flag manifolds of the real simple Lie groups Carlos J. Braga Barros rp-1998-3.pdf |
