Results 31 to 40 of about 813,424 (237)

On Some Results of a Torsion-Free Abelian Kernel Group

open access: yesRecoletos Multidisciplinary Research Journal, 2014
In [6], for any torsion-free abelian groups Gand H, the kernel of Hin GisfHGGHHomfker, ker,. The kernel of Hin Gis a pure fully invariant subgroup of G.
Ricky B. Villeta
doaj   +1 more source

The abelianization of almost free groups [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
We will construct an almost free non-free group G G of cardinality
openaire   +2 more sources

The decomposability problem for torsion-free abelian groups is analytic-complete [PDF]

open access: yes, 2013
We discuss the decomposability of torsion-free abelian groups. We show that among computable groups of finite rank this property is $\Sigma^0_3$-complete.
Kyle W. Riggs
semanticscholar   +1 more source

Discrete non-Abelian groups and asymptotically free models [PDF]

open access: yes, 2001
We consider a two-dimensional $\sigma$-model with discrete icosahedral/dodecahedral symmetry. Using the perturbative renormalization group, we argue that this model has a different continuum limit with respect to the O(3) $\sigma$ model. Such an argument
Caracciolo, Sergio   +2 more
core   +2 more sources

Anomalies of non-Abelian finite groups via cobordism

open access: yesJournal of High Energy Physics, 2022
We use cobordism theory to analyse anomalies of finite non-abelian symmetries in 4 spacetime dimensions. By applying the method of ‘anomaly interplay’, which uses functoriality of cobordism and naturality of the η-invariant to relate anomalies in a group
Joe Davighi   +2 more
doaj   +1 more source

Asymptotically free models and discrete non-Abelian groups [PDF]

open access: yes, 2001
We study the two-dimensional renormalization-group flow induced by perturbations that reduce the global symmetry of the O(3) sigma-model to the discrete symmetries of Platonic solids.
Amit   +22 more
core   +2 more sources

Free Boolean Topological Groups

open access: yesAxioms, 2015
Known and new results on free Boolean topological groups are collected. An account of the properties that these groups share with free or free Abelian topological groups and properties specific to free Boolean groups is given.
Ol’ga Sipacheva
doaj   +1 more source

On Undecidability of Finite Subsets Theory for Torsion Abelian Groups

open access: yesMathematics, 2022
Let M be a commutative cancellative monoid with an element of infinite order. The binary operation can be extended to all finite subsets of M by the pointwise definition. So, we can consider the theory of finite subsets of M.
Sergey Mikhailovich Dudakov
doaj   +1 more source

A Note on Additive Groups of Some Specific Torsion-Free Rings of Rank Three and Mixed Associative Rings

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
It is studied how rank two pure subgroups of a torsion-free Abelian group of rank three influences its structure and type set. In particular, the criterion for such a subgroup B to be a direct summand of a torsion-free Abelian group of rank three with ...
Najafizadeh Alireza, Woronowicz Mateusz
doaj   +1 more source

Torsion-free abelian groups revisited [PDF]

open access: yesRendiconti del Seminario Matematico della Università di Padova, 2020
Let G be a torsion-free abelian group of finite rank. The orbits of the action of Aut( G ) on the set of maximal independent subsets of
openaire   +2 more sources

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