Results 1 to 10 of about 367 (86)

On Efficient Presentations of the Groups PSL $(2, m)$ [PDF]

open access: yesInternational Journal of Group Theory, 2022
We exhibit presentations of the Von Dyck groups $D(2, 3, m), \ m\ge 3$, in terms of two generators of order $m$ satisfying three relations, one of which is Artin's braid relation. By dropping the relation which fixes the order of the generators we obtain
Orlin Stoytchev
doaj   +1 more source

Coherent Presentations of Monoidal Categories [PDF]

open access: yesLogical Methods in Computer Science, 2017
Presentations of categories are a well-known algebraic tool to provide descriptions of categories by means of generators, for objects and morphisms, and relations on morphisms.
Pierre-Louis Curien, Samuel Mimram
doaj   +1 more source

PRESENTATIONS OF AFFINE KAC–MOODY GROUPS

open access: yesForum of Mathematics, Sigma, 2018
How many generators and relations does $\text{SL}\,_{n}(\mathbb{F}_{q}[t,t^{-1}])$ need? In this paper we exhibit its explicit presentation with $9$ generators and $44$ relations. We investigate presentations of affine Kac–Moody groups over finite fields.
INNA CAPDEBOSCQ   +2 more
doaj   +1 more source

Presentations of topological full groups by generators and relations

open access: yesJournal of Algebra, 2018
Let \((\Omega,T)\) be a minimal subshift over a finite alphabet: \(\Omega\) is a closed subset of \(X^{\mathbb Z}\) for a finite alphabet \(X\), invariant under the shift map \(T\), and minimal under these conditions. The associated \textit{topological full group} is the group of self-homeomorphisms of \(\Omega\) that are piecewise powers of \(T\).
Grigorchuk, Rostislav, Medynets, Kostya
openaire   +3 more sources

Presentations of Topological Full Groups by Generators and Relations

open access: yes, 2015
We describe generators and defining relations for the commutator subgroup of topological full groups of minimal subshifts. We show that the word problem in a topological full group is solvable if and only if the language of the underlying subshift is recursive.
Grigorchuk, Rostislav   +1 more
openaire   +2 more sources

Digraph Groups Without Leaf Having An Arc Count One Greater Than Their Vertex

open access: yesCumhuriyet Science Journal
This paper investigates a particular class of digraph groups that are defined by non-empty balanced presentations. Each relation is expressed in the form R(x,y), where x and y are distinct generators, and R(⋅,⋅) is based on a fixed cyclically reduced ...
Mehmet Sefa Cihan
doaj   +1 more source

π 1 of Miranda moduli spaces of elliptic surfaces. [PDF]

open access: yesBoll Unione Mat Ital (2008), 2022
Lönne M.
europepmc   +1 more source

Presentations for vertex-transitive graphs. [PDF]

open access: yesJ Algebr Comb (Dordr), 2022
Georgakopoulos A, Wendland A.
europepmc   +1 more source

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