We prove that a special Moufang sets with abelian root subgroups derive from a quadratic Jordan division algebra if a certain finiteness condition is satisfied.
We construct Moufang sets, Moufang triangles and Moufang hexagons using inner ideals of Lie algebras obtained from structurable algebras via the Tits--Kantor--Koecher construction. The three different types of structurable algebras we use are, respectively: (1) structurable division algebras, (2) algebras $D \oplus D$ for some alternative division algebra $D$, equipped with the exchange involution, (3) matrix structurable algebras $M(J,1)$ for some cubic Jordan division algebra $J$. In each case, we also determine the root groups directly in terms of the structurable algebra.
T. De Medts,Y. Segev和K. Tent [Special Moufang sets,their root groups and their μ-maps,Proc. Lond. Math. Soc.(3)96(2008),767-791]证明了一个特殊的Moufang集M(U,τ)的小投射群是完美的,只要U的大小至少为4。我们给出了一个简短的,基本的和自包含的参数,工作与Timmesfeld的概念,特殊(抽象)秩一组与任意单幂子群[抽象根子群和单群的李型,数学专著,95。Birkhäuser,2001年]。
Special rank one groups with abelian unipotent subgroups are perfect
T. De Medts,Y. Segev和K. Tent [Special Moufang sets,their root groups and their μ-maps,Proc. Lond. Math. Soc.(3)96(2008),767-791]证明了一个特殊的Moufang集M(U,τ)的小投射群是完美的,只要U的大小至少为4。我们给出了一个简短的,小学和自包含的参数时,U是阿贝尔,工作与Timmesfeld的概念,特殊(抽象)秩一组阿贝尔幂幺子群[抽象根子群和单群的李型,数学专着,95。Birkhäuser,2001年]。这简化了Timmesfeld的(准)简单性准则所产生的抽象根子群[loc。前引,[第二(2.14)段]。
Involutive minimal generating sets with two commuting involutions of Extended Special Linear group $ES{L_3}(\mathbb{Z})$, $ES{L_2}(\mathbb{Z})$ and analytical and recursive formulas of roots in SL$_3(\mathbb{F}_p)$ \RomanNumeralCaps{3}
Institute of applied mathematics and mechanics of the NASU(乌克兰国家科学院应用力学研究所)
The aim of this paper is to determine the asymptotic growth rate of the complexity function of cut-and-project sets in the non-abelian case. In the case of model sets of polytopal type in homogeneous two-step nilpotent Lie groups we can establish that the complexity function asymptotically behaves like $r^{homdim(G) dim(H)}$. Further we generalize the concept of acceptance domains to locally compact second countable groups.