Volume 47 (1982) no. 1

Table of contents

On the Joseph-small additivity principle for goldie ranks. A study on extensions of noetherian rings with applications to enveloping algebras
p. 3-29
A Kummer criterion for imaginary quadratic fields
p. 31-42
Sur la résolubilité locale des équations d'Einstein
p. 43-69
Sur la topologie des surfaces affines réglées
p. 71-83
Abelian closure in soluble Lie rings
p. 85-93
Estimates of the first eigenvalue of a big cup domain of a 2-sphere
p. 95-100