41/1998 |
Incomplete decomposition algorithms for discrete dynamic nonlinear models N. Krejic, Véra L. R. Lopes, José Mario Martínez, R. Pérez ![]() ![]() |
40/1998 |
The Dirac-Hestenes Lagrangian Stefano De Leo, Zbigniew Oziewicz, Waldyr A. Rodrigues Jr., Jayme Vaz Jr. We discuss the variational principle within Quantum Mechanics in terms of the noncommutative even Space Time sub-Algebra, the Clifford $\Ra$-algebra $Cl_{1,3}^+$. A fundamental ingredient, in our multivectorial algebraic formulation, is the adoption of a $\D $-complex geometry, $\D \equiv \mbox{span}_{\RR} \{ 1,\gamma_{21} \}$, $\gamma_{21} \in Cl_{1,3}^+$. We derive the Lagrangian for the Dirac-Hestenes equation and show that such Lagrangian must be mapped on $\D \otimes {\cal F}$, where $\cal F$ denotes an $\Ra$-algebra of functions. ![]() ![]() |
39/1998 |
Métodos Estabilizados de Elementos Finitos Márcio Rodolfo Fernandes, Petrônio Pulino ![]() ![]() |
38/1998 |
Quasilinear Dirichlet problems in RN with critical growth Elves A. B. Silva, Sérgio H. M. Soares ![]() ![]() |
37/1998 |
Liouville-Gelfand type problems for the N-Laplacian on bounded domains of IRᶰ Elves A. B. Silva, Sérgio H. M. Soares ![]() ![]() |
36/1998 |
0 Waldyr A. Rodrigues Jr. ![]() |
35/1998 |
Hermitian structures on flag manifolds Xiaohuan Mo, Caio J. C. Negreiros ![]() ![]() |
34/1998 |
Fisher information and alpha-connections for a class of tranformational models Marco A. N. Fernandes, Luiz A. B. San Martin ![]() ![]() |
33/1998 |
Semiparametric Density Estimation via Basis Functions Ronaldo Dias ![]() ![]() |
32/1998 |
A spectral conjugate gradient method for unconstrained optimization Ernesto G. Birgin, José Mario Martínez ![]() ![]() |