Results 91 to 100 of about 120,594 (244)

ON THE GROUPS OF THE INFINITELY GENERATED FREE ABELIAN GROUPS AUTOMORPHISMS

open access: yesВестник Кемеровского государственного университета, 2015
Let A be an infinitely generated free abelian group. The paper shows that all automorphisms of the group Aut(A) are inner.
V. A. Tolstykh
doaj  

FREE GROUPS AND AUTOMORPHISM GROUPS OF INFINITE STRUCTURES

open access: yesForum of Mathematics, Sigma, 2014
Given a cardinal $\lambda $ with $\lambda =\lambda ^{\aleph _0}$
PHILIPP LÜCKE, SAHARON SHELAH
doaj   +1 more source

The fundamental group and Galois coverings of hexagonal systems in 3-space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We consider hexagonal systems embedded into the 3-dimensional space ℝ3. We define the fundamental group π1(G) of such a system G and show that in case G is a finite hexagonal system with boundary, then π1(G) is a (non-Abelian) free group.
J. A. De La Peña, L. Mendoza
doaj   +1 more source

On Algebraic and Definable Closures for Theories of Abelian Groups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
Classifying abelian groups and their elementary theories, a series of characteristics arises that describe certain features of the objects under consideration.
In.I. Pavlyuk
doaj   +1 more source

The Magnus representation and homology cobordism groups of homology cylinders

open access: yes, 2015
A homology cylinder over a compact manifold is a homology cobordism between two copies of the manifold together with a boundary parametrization. We study abelian quotients of the homology cobordism group of homology cylinders. For homology cylinders over
Sakasai, Takuya
core  

Free abelian lattice-ordered groups

open access: yesAnnals of Pure and Applied Logic, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Glass, A. M. W.   +2 more
openaire   +1 more source

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