The Free Abelian Topological Group and the Free Locally Convex Space on the Unit Interval [PDF]
10 pages, AmS TeX 2 ...
Leiderman, Arkady +2 more
openaire +4 more sources
Countably compact group topologies on the free Abelian group of size continuum (and a Wallace semigroup) from a selective ultrafilter [PDF]
We prove that the existence of a selective ultrafilter implies the existence of a countably compact Hausdorff group topology on the free Abelian group of size continuum. As a consequence, we show that the existence of a selective ultrafilter implies the existence of a Wallace semigroup (i.e., a countably compact both-sided cancellative topological ...
Boero, A. C. +2 more
openaire +4 more sources
The Mackey problem for free abelian topological groups [PDF]
According to the classical Mackey Arens theorem, to every locally convex vector can be assigned a locally convex vector space topology on the same underlying space which is the finest among all locally convex vector space topologies giving rise to the same dual space as the original topology. It was shown in [the author, Proc. Am. Math. Soc. 146, No. 8,
Saak Gabriyelyan
openaire +3 more sources
Electric-Current-Assisted Nucleation of Zero-Field Hopfion Rings. [PDF]
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Chen X +12 more
europepmc +2 more sources
Group actions on topological graphs [PDF]
We define the action of a locally compact group $G$ on a topological graph $E$. This action induces a natural action of $G$ on the $C^*$-correspondence ${\mathcal H}(E)$ and on the graph $C^*$-algebra $C^*(E)$.
Deaconu, Valentin +2 more
core +3 more sources
Refining connected topological group topologies on Abelian torsion-free groups
The authors develop a technique for refining certain topological groups. The main result of the paper is: Theorem. Let \(G\) be a connected Abelian torsion-free group with weight less than or equal to \(\aleph_1\) and cellularity less than or equal to \(\aleph_0\).
Tkačenko, Michael G. +1 more
openaire +1 more source
The character of free topological groups II
A systematic analysis is made of the character of the free and free abelian topological groups on metrizable spaces and compact spaces, and on certain other closely related spaces.
Peter Nickolas, Mikhail Tkachenko
doaj +1 more source
Minimal pseudocompact group topologies on free abelian groups
18 ...
DIKRANJAN, Dikran +2 more
openaire +2 more sources
Free Topological Groups and the Projective Dimension of a Locally Compact Abelian Group [PDF]
It is shown that a free topological group on a k ω {k_\omega } -space is a k ω {k_\omega } -space. Using this it is proved that if X X is a k ω {k_\omega } -group then it is a ...
Mack, John +2 more
openaire +2 more sources
Stanley-Reisner rings of Buchsbaum complexes with a free action by an abelian group [PDF]
We consider simplicial complexes admitting a free action by an abelian group. Specifically, we establish a refinement of the classic result of Hochster describing the local cohomology modules of the associated Stanley--Reisner ring, demonstrating that ...
Sawaske, Connor
core +3 more sources

