Sommaire du Fascicule no. 1

On minimal ideals in semigroups with respect to their subsets. I.
p. 1-12
Ideal Banach category theorems and functions
p. 13-20
Boolean cluster models: mean cluster dilations and spherical contact distances
p. 21-36
The behaviour of the nonwandering set of a piecewise monotonic interval map under small perturbations
p. 37-55
A note on separate continuity and connectivity properties
p. 57-61
Convergence $l$-groups with zero radical
p. 63-73
Transitivity and partial order
p. 75-82
A PU-integral on an abstract metric space
p. 83-95
Miroslav Katětov (1918--1995)
p. 97-111
Book Reviews

Sommaire du Fascicule no. 2

Circular distance in directed graphs
p. 113-119
Magic powers of graphs
p. 121-124
Rees ideal algebras
p. 125-130
Factorization of Toeplitz and Hankel operators
p. 131-145
Unions of uniquely complemented lattices
p. 147-152
Spectral properties of fourth order differential operators
p. 153-168
Double $n$-ary relational structures
p. 169-174
Upper and lower solutions for singularly perturbed semilinear Neumann's problem
p. 175-180
Comparison theorems for differential equations of neutral type
p. 181-189
Inertial law of symplectic forms on modules over plural algebra
p. 191-196
On some properties of the class $\scr P(B,b,\alpha)$
p. 197-220
Book Reviews
p. 221-224

Sommaire du Fascicule no. 3

A linear algorithm to recognize maximal generalized outerplanar graphs
p. 225-230
Two classes of graphs related to extremal eccentricities
p. 231-241
The cross-ratio in Hjelmslev planes
p. 243-247
On $r$-extendability of the hypercube $Q\sb n$
p. 249-255
Noether theorem and first integrals of constrained Lagrangean systems
p. 257-265
$\lambda$-lattices
p. 267-272
Transversally symmetric immersions
p. 273-294
Normal spaces and the Lusin-Menchoff property
p. 295-299
Closed convex $l$-subgroups and radical classes of convergence $l$-groups
p. 301-315
Reflection and a mixed boundary value problem concerning analytic functions
p. 317-336

Sommaire du Fascicule no. 4

Stratidistance in stratified graphs
p. 337-347
Property (A) of $n$-th order ODE's
p. 349-356
On two transformations of graphs
p. 357-363
Disjoint and complete unions of incidence structures
p. 365-374
Pairwise fuzzy connectedness between fuzzy sets
p. 375-380
Jónsson's lemma for normally presented varieties
p. 381-382
On the measures of DiPerna and Majda
p. 383-399
Note on a Lovász's result
p. 401-403
Fourier problem with bounded Baire data
p. 405-441
Book Reviews
p. 442-446