Results 1 to 10 of about 7,271 (214)

On the Order of the Schur Multiplier of a Pair of Finite p-Groups [PDF]

open access: green, 2013
In 1998, G. Ellis defined the Schur multiplier of a pair $(G,N)$ of groups and mentioned that this notion is a useful tool for studying pairs of groups.
A. Hokmabadi   +3 more
core   +4 more sources

The local geometry of idempotent Schur multipliers [PDF]

open access: diamondForum of Mathematics, Pi
A Schur multiplier is a linear map on matrices which acts on its entries by multiplication with some function, called the symbol. We consider idempotent Schur multipliers, whose symbols are indicator functions of smooth Euclidean domains.
Javier Parcet   +2 more
doaj   +2 more sources

A Note on the Schur Multiplier of a Nilpotent Lie Algebra [PDF]

open access: greenCommunications in Algebra, 2011
Peyman Niroomand, Francesco G Russo
exaly   +2 more sources

Schur's exponent conjecture - counterexamples of exponent $5$ and exponent $9$ [PDF]

open access: yesInternational Journal of Group Theory, 2021
There is a long-standing conjecture attributed to I. Schur that if $G$ is a finite group with Schur multiplier $M(G)$ then the exponent of $M(G)$ divides the exponent of $G$. In this note I give an example of a four generator group $G$ of order $5^{4122}$
Michael Vaughan-Lee
doaj   +1 more source

Some results on schur multiplier of pairs of groups [PDF]

open access: yesMathematics and Computational Sciences, 2021
In this paper , we study the concept of the c-nilpotent multiplier of a pair of groups and prove that the c-nilpotent multipliers of perfect pairs of groups are isomorphic .Also, we prove an inequality for the order of the Schur multiplier of a pair of ...
H Arabyani
doaj   +1 more source

Schur multiplier operator and matrix inequalities [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
In this note we obtain a reverse version of the Haagerup Theorem. In particular, if $ A \in \mathbb{M}_{n}$ has a $ 2\times2- $ principal submatrix as $ \left[ \begin{array}{cc}1& \alpha \\\beta & 1\\\end{array}\right]$ with $ \beta \neq \bar{\alpha ...
Alemeh Sheikhhosseini
doaj   +1 more source

On the occurrence of elementary abelian $p$-groups as the Schur multiplier of non-abelian $p$-groups

open access: yesComptes Rendus. Mathématique, 2023
We prove that every elementary abelian $p$-group, for odd primes $p$, occurs as the Schur multiplier of some non-abelian finite $p$-group.
Rai, Pradeep K.
doaj   +1 more source

On Isoclinic Extensions of Lie Algebras and Nilpotent Lie Algebras

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2021
In this paper, we present the concept of isoclinism of Lie algebras and its relationship to the Schur multiplier of Lie algebras. Moreover, we prove some properties of a pair of nilpotent Lie algebras.
Arabyani Homayoon   +1 more
doaj   +1 more source

A Maximal Subgroup 2^{4+6}:(A_5 x 3) of G_2(4) Treated as a Non-Split Extension \overline{G} = 2^{6·}(2^4:(A_5 x 3)) [PDF]

open access: yesAdvances in Group Theory and Applications, 2020
The maximal subgroup $2^{4+6}{:}(A_5\times3)$ of the Chevalley group $G_2(4)$ is isomorphic to a non-split extension group of the shape $\overline{G}=2^{6}{{}^\cdot}(2^4{:}(A_5\times3))$.
Abraham Love Prins
doaj   +1 more source

Some Upper Bounds for the Dimension of the c-Nilpotent Multiplier of a Pair of Lie Algebras

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2020
The notion of the Schur multiplier of a Lie algebra L was introduced by Batten in 1996. Recently, the first author introduced the concept of the cnilpotent multiplier of a pair of Lie algebras and gave some exact sequences for the c-nilpotent multiplier ...
Arabyani Homayoon   +2 more
doaj   +1 more source

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