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On the growth sequences of the free products of some copies of PSL(n,q

Author:
احمد عرفانیان مشیری نژاد
,
Ahmad Erfanian
Year
: 2008
Abstract: Let $G$ be a finitely generated group and $G^n$ be the direct

product of $n$ copies of $G$. The growth sequence of $G$ is the

sequence $\\\\\\\\\\\\\\\\{d(G^n)\\\\\\\\\\\\\\\\}_{n \\\\\\\\\\\\\\\\geq1}$, where $d(G^n)$ is the minimum

number of generators of $G^n$. The purpose of this article is to

investigate the growth sequences of $G$, where $G=\\\\\\\\\\\\\\\\kcopy$ is the

free products of $k$ copies of the projective special linear simple

group $\\\\\\\\\\\\\\\\ps$, $m,q \\\\\\\\\\\\\\\\geq 2$. In fact, we establish that

$d\\\\\\\\\\\\\\\\left(G^{h(2,\\\\\\\\\\\\\\\\ps)^k}\\\\\\\\\\\\\\\\right) = 2k$ for all $m,q \\\\\\\\\\\\\\\\geq 2$, where

$h(2,\\\\\\\\\\\\\\\\ps)$ is the maximum number $t$ such that $d(\\\\\\\\\\\\\\\\ps ^t)=2$.

Moreover, we prove that \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

$d\\\\\\\\\\\\\\\\left(( \\\\\\\\\\\\\\\\mkcopy )^t \\\\\\\\\\\\\\\\right)=2k $ \\\\\\\\\\\\\\\\hspace{0.2 cm} for all $m_i,q_i

\\\\\\\\\\\\\\\\geq 2$, $1 \\\\\\\\\\\\\\\\leq i \\\\\\\\\\\\\\\\leq k$ and \\\\\\\\\\\\\\\\hspace{0.2 cm} $ 1 \\\\\\\\\\\\\\\\leq t \\\\\\\\\\\\\\\\leq

h(2,\\\\\\\\\\\\\\\\pk)h(2,\\\\\\\\\\\\\\\\pkk) \\\\\\\\\\\\\\\\cdots h(2,\\\\\\\\\\\\\\\\pkn)$.\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\noindent We have also

confirmed the above

results by several examples in find section.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
URI: http://libsearch.um.ac.ir:80/fum/handle/fum/3372084
Keyword(s): Minimum number of generators,growth sequences,free product,projective linear group
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    On the growth sequences of the free products of some copies of PSL(n,q

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contributor authorاحمد عرفانیان مشیری نژادen
contributor authorAhmad Erfanianfa
date accessioned2020-06-06T13:51:26Z
date available2020-06-06T13:51:26Z
date issued2008
identifier urihttp://libsearch.um.ac.ir:80/fum/handle/fum/3372084
description abstractLet $G$ be a finitely generated group and $G^n$ be the direct

product of $n$ copies of $G$. The growth sequence of $G$ is the

sequence $\\\\\\\\\\\\\\\\{d(G^n)\\\\\\\\\\\\\\\\}_{n \\\\\\\\\\\\\\\\geq1}$, where $d(G^n)$ is the minimum

number of generators of $G^n$. The purpose of this article is to

investigate the growth sequences of $G$, where $G=\\\\\\\\\\\\\\\\kcopy$ is the

free products of $k$ copies of the projective special linear simple

group $\\\\\\\\\\\\\\\\ps$, $m,q \\\\\\\\\\\\\\\\geq 2$. In fact, we establish that

$d\\\\\\\\\\\\\\\\left(G^{h(2,\\\\\\\\\\\\\\\\ps)^k}\\\\\\\\\\\\\\\\right) = 2k$ for all $m,q \\\\\\\\\\\\\\\\geq 2$, where

$h(2,\\\\\\\\\\\\\\\\ps)$ is the maximum number $t$ such that $d(\\\\\\\\\\\\\\\\ps ^t)=2$.

Moreover, we prove that \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

$d\\\\\\\\\\\\\\\\left(( \\\\\\\\\\\\\\\\mkcopy )^t \\\\\\\\\\\\\\\\right)=2k $ \\\\\\\\\\\\\\\\hspace{0.2 cm} for all $m_i,q_i

\\\\\\\\\\\\\\\\geq 2$, $1 \\\\\\\\\\\\\\\\leq i \\\\\\\\\\\\\\\\leq k$ and \\\\\\\\\\\\\\\\hspace{0.2 cm} $ 1 \\\\\\\\\\\\\\\\leq t \\\\\\\\\\\\\\\\leq

h(2,\\\\\\\\\\\\\\\\pk)h(2,\\\\\\\\\\\\\\\\pkk) \\\\\\\\\\\\\\\\cdots h(2,\\\\\\\\\\\\\\\\pkn)$.\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\noindent We have also

confirmed the above

results by several examples in find section.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
en
languageEnglish
titleOn the growth sequences of the free products of some copies of PSL(n,qen
typeJournal Paper
contenttypeExternal Fulltext
subject keywordsMinimum number of generatorsen
subject keywordsgrowth sequencesen
subject keywordsfree producten
subject keywordsprojective linear groupen
journal titleInternational Journal of Mathematics, Game Theory and Algebraen
journal titleInternational Journal of Mathematics, Game Theory and Algebrafa
pages17-Nov
journal volume18
journal issue1
identifier linkhttps://profdoc.um.ac.ir/paper-abstract-1009473.html
identifier articleid1009473
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