Geodesic

Volume 21 (1962) no. 3

Sommaire

Note on complemented closure operators of complete lattices
p. 135-142
On matrix commutators
p. 143-153
A characterization of the closure operators by means of one axiom
p. 155-156
Sur l'associativité partielle des symétrisations de semi-groupes
p. 157-169
Hamiltonian semigroups
p. 171-187
The collineation groups of some finite projective planes
p. 189-199
The generating function for max(n_1,...,n_k)
p. 201-207