Geodesic

Sommaire du Fascicule no. 1-2

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 $\bold Z/l\bold Z$
p. 35-46
Universality of directed graphs of a given height
p. 47-54
$D_0$-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

Sommaire du Fascicule no. 3

Bases rationnelles des systèmes de quadriques
p. 119-126
Antimorphisms of partially ordered sets
p. 127-135
Necessary and sufficient conditions for finally vanishing oscillatory solutions in second order delay equations
p. 137-148
Algebraic theory of fast mixed-radix transforms. I. Generalized Kronecker product of matrices
p. 149-161
A grammatical inference for $C$-finite languages
p. 163-173

Sommaire du Fascicule no. 4

A four-point problem for differential equations of the second order
p. 175-184
On iteration groups of certain functions
p. 185-194
Asymptotic behaviour of the equation $\dot z=G(t,z)[h(z)+g(t,z)]$
p. 195-206
On some non-linear boundary value problems for ordinary differential equations
p. 207-222
Singular quadratic functionals and transformation of linear Hamiltonian systems
p. 223-234
A simple proof of a semi-Fredholm principle for periodically forced systems with homogeneous nonlinearities
p. 235-238