نتایج جستجو برای: V-covering group
تعداد نتایج: 1297342 فیلتر نتایج به سال:
chapter one is devotod to collect some notion and background informations, which are needed in the next chapters. it also contains some important statements which will be proved in a more general context later in this thesis. in chapter two, we show that if the marginal factor-group is of order np1...pk,n>1, then we obtain a bound for the order of the verbal subgroup. also a bound for the bear-...
let $gamma(s_n)$ be the minimum number of proper subgroups $h_i, i=1, dots, l $ of the symmetric group $s_n$ such that each element in $s_n$ lies in some conjugate of one of the $h_i.$ in this paper we conjecture that $$gamma(s_n)=frac{n}{2}left(1-frac{1}{p_1}right) left(1-frac{1}{p_2}right)+2,$$ where $p_1,p_2$ are the two smallest primes in the factorization of $ninmathbb{n}$ an...
in this paper, we verify the solvability of free product of finite cyclic groups with topological methods. we use cayley graphs and everitt methods to construct suitable 2-complexes corresponding to the presentations of groups and their commutator subgroups. in particular, using these methods, we prove that the commutator subgroup of $mathbb{z}_{m}*mathbb{z}_{n}$ is free of rank $(m-1)(n-1)$ fo...
G: a connected finite simple graph with vertex set V (G) and edge set E(G). Neighborhood N(v) of v : the set of vertices adjacent to v ∈ V (G). A map p : G̃ → G is a covering of G if p : V (G̃) → V (G) is surjective and p|N(ṽ) : N(ṽ) → N(v) is bijective for ∀v ∈ V (G) and ∀ṽ ∈ p−1(v). It is an n-fold covering if p is n-to-one. A covering p : G̃ → G is regular (or, A-covering) if there is a subgrou...
we commence by using from a new norm on l1(g) the -algebra of all integrable functions on locally compact group g, to make the c-algebra c(g). consequently, we find its dual b(g), which is a banach algebra so-called fourier-stieltjes algebra, in the set of all continuous functions on g. we consider most of important basic theorems about this algebra. this consideration leads to a rather com...
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