Geodesic

Volume 25 (1989) no. 1-2

Sommaire

In memory of Prof. M. Sekanina, list of publications
p. 1-4
Transitive ternary relations and quasiorderings
p. 5-12
Retracts of abelian cyclically ordered groups
p. 13-18
On equality of edge-connectivity and minimum degree of a graph
p. 19-25
Tolerances, covering systems, and the axiom of choice
p. 27-34
Special invariant subspaces of a vector space over \boldZ/l\boldZ
p. 35-46
Universality of directed graphs of a given height
p. 47-54
D0-favouring Eulerian trails in digraphs
p. 55-60
Remarks on Hamiltonian properties of squares of graphs
p. 61-72
Median groups
p. 73-82
Realizations of topologies and closure operators by set systems and by neighbourhoods
p. 83-87
Reflections in locally presentable categories
p. 89-94
Complete permutability of partitions in a set. I
p. 95-102
О регулярности элементов релятива
p. 103-106
Multiplicative structures over sup-lattices
p. 107-114
Representability of concrete categories by non-constant morphisms
p. 115-118