Results 1 to 10 of about 877 (71)
The mapping class group of a genus two surface is linear [PDF]
, 2001 In this paper we construct a faithful representation of the mapping class group of the genus two surface into a group of matrices over the complex numbers.
Farkas +6 more
core +2 more sources
Failure analysis of a 40 ton crane hook at a Hot Strip Mill
MATEC Web of Conferences, 2018 There have been accounts of repeated failure of crane hooks at the coil yard of a Hot Strip Mill which pose a serious threat to safety in the area. More than 4 hooks failed in less than 5 years.
Das Souvik +2 more
doaj +2 more sources
On covers of abelian groups by cosets [PDF]
, 2008 Let G be any abelian group and {a_sG_s}_{s=1}^k be a finite system of cosets of subgroups G_1,...,G_k. We show that if {a_sG_s}_{s=1}^k covers all the elements of G at least m times with the coset a_tG_t irredundant then [G:G_t]\le 2^{k-m} and ...
Lettl, Günter, Sun, Zhi-Wei
core +5 more sources
The fields of values of characters of degree not divisible by p
Forum of Mathematics, Pi, 2021 We study the fields of values of the irreducible characters of a finite group of degree not divisible by a prime p. In the case where $p=2$, we fully characterise these fields.
Gabriel Navarro, Pham Huu Tiep
doaj +1 more source
The construction of nuclei for normal constituents of Bπ-characters
Open Mathematics, 2023 Let GG be a π\pi -separable group for some set π\pi of primes, let χ∈Bπ(G)\chi \in {B}_{\pi }\left(G) and let N◃GN\hspace{0.33em}\triangleleft \hspace{0.33em}G. In this article, we explore how to construct a nucleus for an irreducible constituent of χN{\
Jin Jun, Zhang Junwei
doaj +1 more source
p-parts of co-degrees of irreducible characters
, 2021 For a character χ of a finite group G , the co-degree of χ is χc (1) = [G :kerχ] χ(1) . Let p be a prime and let e be a positive integer. In this paper, we first show that if G is a p-solvable group such that pe+1 χc (1), for every irreducible character ...
Roya Bahramian, N. Ahanjideh
semanticscholar +1 more source
On cospectrality of gain graphs
Special Matrices, 2022 We define GG-cospectrality of two GG-gain graphs (Γ,ψ)\left(\Gamma ,\psi ) and (Γ′,ψ′)\left(\Gamma ^{\prime} ,\psi ^{\prime} ), proving that it is a switching isomorphism invariant.
Cavaleri Matteo, Donno Alfredo
doaj +1 more source
The Asymptotic Statistics of Random Covering Surfaces
Forum of Mathematics, Pi, 2023 Let $\Gamma _{g}$ be the fundamental group of a closed connected orientable surface of genus $g\geq 2$ . We develop a new method for integrating over the representation space $\mathbb {X}_{g,n}=\mathrm {Hom}(\Gamma _{g},S_{n})$ , where
Michael Magee, Doron Puder
doaj +1 more source
Seminormal Representations of Weyl Groups and Iwahori‐Hecke Algebras [PDF]
, 1995 The purpose of this paper is to describe a general procedure for computing analogues of Young's seminormal representations of the symmetric groups. The method is to generalize the Jucys‐Murphy elements in the group algebras of the symmetric groups to ...
Arun Ram
semanticscholar +1 more source
Detecting the prime divisors of the character degrees and the class sizes by a subgroup generated with few elements [PDF]
, 2018 We prove that every finite group G contains a three-generated subgroup H with the following property: a prime p divides the degree of an irreducible character of G if and only if it divides the degree of an irreducible character of H: There is no ...
Lucchini, Andrea
core +4 more sources