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Orbifolds and finite group representations
Published 2001-01-01“…We present our recent understanding on resolutions of Gorenstein orbifolds, which involves the finite group representation theory. We concern only the quotient singularity of hypersurface type. …”
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On the group pseudo-algebra of finite groups
Published 2024-11-01“…Let $G$ be a finite group. The group pseudo-algebra of $G$ is defined as the multi-set $C(G)=\lbrace (d,m_G(d))\mid d\in \mathrm{Cod} (G)\rbrace $, where $m_G(d)$ is the number of irreducible characters of $G$ with codegree $d\in \mathrm{Cod}(G)$. …”
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Finite Groups Which Are the Union of Autocentralizers of Some Automorphisms
Published 2022-01-01“…In this work, we study finite groups G, which can be written as the union of autocentralizers of some automorphisms of G. …”
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The normalizer problem for finite groups having normal $ 2 $-complements
Published 2024-08-01“…Assume that $ H $ is a finite group that has a normal $ 2 $-complement. Under some conditions, it is proven that the normalizer property holds for $ H $. …”
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On the Set of the Numbers of Conjugates of Noncyclic Proper Subgroups of Finite Groups
Published 2013-01-01“…Let G be a finite group and 𝒩𝒞(G) the set of the numbers of conjugates of noncyclic proper subgroups of G. …”
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The Tracial Class Property for Crossed Products by Finite Group Actions
Published 2012-01-01“…Let A be an infinite dimensional simple unital tracial 𝒞-algebra with the (SP)-property, and let α:G→Aut(A) be an action of a finite group G on A which has the tracial Rokhlin property. …”
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A note on influence of subgroup restrictions in finite group structure
Published 1989-01-01“…The structure of a finite group under specific restrictions respectively on its maximal, minimal and prime power subgroups has been investigated in this paper.…”
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A Note on the Normal Index and the c-Section of Maximal Subgroups of a Finite Group
Published 2014-01-01“…Let M be a maximal subgroup of finite group G. For each chief factor H/K of G such that K≤M and G=MH, we called the order of H/K the normal index of M and M∩H/K a section of M in G. …”
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Finite Groups of Order p2qr in which the Number of Elements of Maximal Order Is p3q∗
Published 2022-01-01“…Let G be a finite group. We know that the order of G and the number of elements of maximal order in G are closely related to the structure of G. …”
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Finite Groups with the Same Order and the Same Number of Elements of Maximal Order as the Projective Special Linear Group L2q
Published 2022-01-01“…Assume that G is a finite group. It is widely known that G and the number of elements of maximal order in G have something to do with the structure of G. …”
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On forbidden subgraphs of main supergraphs of groups
Published 2024-08-01Subjects: Get full text
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Congruences associated with families of nilpotent subgroups and a theorem of Hirsch
Published 2023-11-01“…Our main result associates a family of congruences with each suitable system of nilpotent subgroups of a finite group. Using this result, we complete and correct the proof of a theorem of Hirsch concerning the class number of a finite group of odd order.…”
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Commutator Length of Finitely Generated Linear Groups
Published 2008-01-01“…Finally we show that if 𝐺 is a soluble-by-finite group of Prüffer rank 𝑟 then cl(𝐺)≤𝑟(𝑟+1)/2+12𝑟3+𝑜(𝑟2), where 𝑜(𝑟2) is a quadratic polynomial in 𝑟.…”
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Anti- CC-Groups and Anti-PC-Groups
Published 2007-01-01“…Analogously, a group G has polycyclic-by-finite classes of conjugate subgroups if the quotient group G/coreG(NG(H)) is a polycyclic-by-finite group for each subgroup H of G. An anti-PC group G is a group in which each nonfinitely generated subgroup K has the quotient group G/coreG(NG(K)) which is a polycyclic-by-finite group. …”
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Picard Groups of Algebraic Groups and an Affineness Criterion
Published 2023-02-01“…We prove that an algebraic group over a field $k$ is affine precisely when its Picard group is torsion, and show that in this case the Picard group is finite when $k$ is perfect, and the product of a finite group of order prime to $p$ and a $p$-primary group of finite exponent when $k$ is imperfect of characteristic $p$.…”
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On Pseudo-contractibility and Ultra Central Approximate Identity of Some Semigroup Algebras
Published 2022-01-01“…As an application, we show that for a left cancellative semigroup S, ℓ1S∗∗ is pseudo-contractible if and only if S is a finite group. We also study this property for φ-Lau product Banach algebras and the module extension Banach algebras.…”
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Groups with the same orders of Sylow normalizers as the Mathieu groups
Published 2005-01-01“…Also we prove that if G is a finite group, then G≅M if and only if for every prime q, |NM(Q)|=|NG(Q′)|, where Q∈Sylq(M) and Q′∈Sylq(G).…”
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