Geodesic

Volume 29 (1979) no. 1

Sommaire

Summaries of articles published in this issue
Cohomology and special extensions of groups
p. 1-10
Varieties of l-groups are torsion classes
p. 11-12
Polarity compatible with a closure system
p. 13-20
A note on some varieties of point algebras
p. 21-26
A contribution to the theory of stability of differential equations in Banach space
p. 27-52
p.p. rings and reduced rings
p. 53-56
Remarks on the rows and columns of P in the matrix equation A=PP∗
p. 57-61
F-quasigroups isotopic to Moufang loops
p. 62-83
Varieties of quasigroups determined by short strictly balanced identities
p. 84-96
Quasi-injective S-systems and their S-endomorphism semigroup
p. 97-104
Nonuniqueness for the solutions of ordinary differential equations
p. 105-112
On summability in convergence groups
p. 113-115
Über projektive Erweiterung affiner Klingenbergscher Ebenen
p. 116-129
Products of uniform spaces
p. 130-141
A class of sets whose distance set fills an interval
p. 142-143
The coefficient ring of the skew group ring
p. 144-147
On the density of certain sets in arithmetical semigroups
p. 148-152
A note on a result of Kendall
p. 153-158
Finite Abelian semigroups represented into the power set of finite groups
p. 159-162
In memoriam Professor Jiří Fábera, corresponding member of the Czechoslovak Academy of Sciences
p. 163-168