Results 11 to 20 of about 57,146 (152)

The Free Abelian Topological Group and the Free Locally Convex Space on the Unit Interval [PDF]

open access: yesJournal of the London Mathematical Society, 1997
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]

open access: yesActa Mathematica Hungarica, 2019
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]

open access: yesRevista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2018
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]

open access: yesAdv Mater
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]

open access: yes, 2010
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

open access: yesJournal of Pure and Applied Algebra, 1998
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

open access: yesApplied General Topology, 2005
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

open access: yesTopology and its Applications, 2009
18 ...
DIKRANJAN, Dikran   +2 more
openaire   +2 more sources

Free Topological Groups and the Projective Dimension of a Locally Compact Abelian Group [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
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]

open access: yes, 2018
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

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