Boletín de la Sociedad Matemática Mexicana (2)

Oscar Valdivia G.
Algebras de Hopf y fórmulas del producto
pages 1-31

S. Gitler and M. Mahowald
The geometric dimension of real stable vector bundles. Addendum
pages 32-34

Emery Thomas
An exact sequence for principal fibrations
pages 35-45

Rolando E. Peinado
On the commutativity of rings
pages 46-48

Samir A. Khabbaz
The equivalence of the rings of continuous and analytic vector bundles on a real-analytic manifold
pages 49-54

S. de Neymet de Christ
Algunas relaciones en la torsión de Whitehead
pages 55-70

Mark Mahowald and Martin Tangora
On secondary operations which detect homotopy classes
pages 71-75

Samuel Feder
The reduced symmetric product of a projective space and the embedding problem
pages 76-80

Byron Drachman
A diagonal map for the cobar construction
pages 81-91

Por Ignacio Canals y Francisco Tomas
Sobre ideales de funciones p-adicas enteras y polinomios de aproximación.
pages 92-99