Oscillations in seasonal SIR models with saturated treatment L. Rocío González-Ramírez, Osvaldo Osuna, Geiser Villavicencio-Pulido 125-131 PDF
The group of automorphisms of the Fermat curve Marby Bolaños Ortiz, Maribel Díaz, Martha Romero Rojas 133-138 PDF
On the second symmetric product of indecomposable chainable continua María de Jesús López, Emanuel Ramírez Márquez 139-146 PDF (Español (España))
Armendariz property for skew PBW extensions and their classical ring of quotients Armando Reyes, Héctor Suárez 147-168 PDF
A neural network model for nonlinear complementarity problems Favián Arenas, Rosana Pérez, Hevert Vivas 169-185 PDF (Español (España))
A quasi-Newton algorithm to solve the matrix quadratic equation Mauricio Macías, Héctor J. Martínez, Rosana Pérez 187-206 PDF (Español (España))
On the uniqueness of sign-changing solutions to a semipositone problem in annuli Hugo Aduén, Sigifredo Herrón 207-224 PDF
