Boolean lattices of function algebras on rectangular semigroups.
Borel Structures in Groups and Semigroups.
Brandt extensions and primitive topological inverse semigroups.
C*-algebra of a differential groupoid
Cancellative semigroups on manifolds.
Caractérisation des groupes de cohomologie d'un groupe topologique en termes de suites exactes
Cardinal characteristics of the ideal of Haar null sets
We calculate the cardinal characteristics of the -ideal of Haar null subsets of a Polish non-locally compact group with invariant metric and show that . If is the product of abelian locally compact groups , then , , and , where is the ideal of Lebesgue null subsets on the real line. Martin Axiom implies that and hence contains a Haar null subset that cannot be enlarged to a Borel or projective Haar null subset of . This gives a negative (consistent) answer to a question of...
Cardinalities of lattices of topologies of unars and some related topics
In this paper we find cardinalities of lattices of topologies of uncountable unars and show that the lattice of topologies of a unar cannor be countably infinite. It is proved that under some finiteness conditions the lattice of topologies of a unar is finite. Furthermore, the relations between the lattice of topologies of an arbitrary unar and its congruence lattice are established.
Cauchy sequences in -groups
Character formula for wreath products of compact groups with the infinite symmetric group
Let be the wreath product of a compact group T with the infinite symmetric group . We study the characters of factor representations of finite type of G, and give a formula which expresses all the characters explicitly.
Characteristic Homomorphisms of Regular Lie Algebroids
Characterization of -subcompactification
For extending the notion of -algebra, as defined in [2], we present an example of an m-admissible algebra which is not an - algebra. Then we define -subcompactification and -subcompactification to study the universal -subcompactification and the universal -subcompactification from the function algebras point of view.
Characterizing wirkfelder of certain classes of summability methods.
Chu-spaces, a group algebra and induced representations.
Clan acts and codimension.
Closed categories and topological vector spaces
Closed congruences on semigroups.
Closed ideals in semigroups of continuous selfmaps.
Closed subgroups in Banach spaces
We show that zero-dimensional nondiscrete closed subgroups do exist in Banach spaces E. This happens exactly when E contains an isomorphic copy of . Other results on subgroups of linear spaces are obtained.
Closure of singly generated subsemigroups of S.