Geodesic

Sommaire du Fascicule no. 1

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

Sommaire du Fascicule no. 2

Summaries of articles published in this issue
The multiplication functions of Kučera
p. 169-177
Accessibility spaces, $k$-spaces and initial topologies
p. 178-186
Minimal sets of vectors which generate $R_n$ with excess $k$
p. 187-191
Über vollständige Automorphismengruppen und Gleichungen in der Modulgruppe
p. 192-201
Ramsey theorem for classes of hypergraphs with forbidden complete subhypergraphs
p. 202-218
A modification and comparison of Filippov and Viktorovskij generalized solutions
p. 219-231
Embedding of semilattices into distributive lattices
p. 232-245
Schur complements of diagonally dominant matrices
p. 246-251
The characterization of $\frak m$-compact elements in some lattices
p. 252-267
The argument delay and oscillatory properties of differential equation of $n$-th order
p. 268-283
A characterization of hyperspheres in the quaternionic space
p. 284-286
Sequentially complete spaces
p. 287-297
On eulerian subgraphs of complementary graphs
p. 298-302
Darboux motions in $E_n$
p. 303-317
A note on the oscillation of solutions of the differential equation $y''=\lambda q(t)y$ with a periodic coefficient
p. 318-323
Correction to the paper “Generators of an orthogonal group over a finite field”
Book review. A. Kufner, O. John, S. Fučík: Function Spaces
Academician Vladimír Kořínek octogenarian
p. 326-327
The eightieth birthday of Academician Otakar Borůvka
p. 330-335

Sommaire du Fascicule no. 3

Summaries of articles published in this issue
Zerlegbarkeitskriterien für Invarianten torsionsfreier abelscher Gruppen des Ranges 2
p. 337-339
On the differentiation of convex functions in finite and infinite dimensional spaces
p. 340-348
On the existence of 1-factors in partial squares of graphs
p. 349-352
The Cartesian product of sets and the Hessenberg natural product of ordinals
p. 353-358
On algebraic closures of compact elements
p. 359-365
О ретракции отображений
p. 366-377
Об эквивалентности некоторых свойств непрерывных отображений
p. 378-384
On congruence lattices in a category
p. 385-395
Lattices of convex equivalences
p. 396-405
Systems of unary algebras with common endomorphisms. I
p. 406-420
Systems of unary algebras with common endomorphisms. II
p. 421-429
Régularité de la solution forte de problèmes non linéaires d'évolution
p. 430-450
Boundary value problems for generalized linear differential equations
p. 451-477
On integration in Banach spaces, III
p. 478-499
Note on homomorphisms of direct products of algebras
p. 500-501
Correction to the paper “Continuous dependence of holomorphic functions on partly given boundary values”

Sommaire du Fascicule no. 4

A family of Kučera spaces
p. 503-513
Functional separation of inductive limits and representation of presheaves by sections. Part II. Embedding of presheaves into presheaves of compact spaces
p. 514-529
On the lattice of subalgebras of a Boolean algebra
p. 530-545
$LU$ factorizations
p. 546-550
Eine Klasse entarteter gewöhnlicher Differentialgleichungen und das Kollokationsverfahren zu ihrer Lösung
p. 551-563
Some remarks on Eulerian graphs
p. 564-567
Decompositions of homomorphisms
p. 568-572
Several new characterizations of the 2-dimensional sphere in $E^4$
p. 573-583
Tolerances and convexity
p. 584-587
On 2-factors in squares of graphs
p. 588-594
Primitive lattices
p. 595-634
On compact embedding theorems in weighted Sobolev spaces
p. 635-648
Powers and Gevrey's regularity for a system of differential operators
p. 649-661
Correction to my paper on structure and ideal theory of commutative semigroups
p. 662-663
News and Notices. Academician Ján Jakubík awarded the Klement Gottwald State Prize
p. 664-667
Summaries of articles published in this issue
p. 671