搜索结果: 1-15 共查到“数学 transitive”相关记录16条 . 查询时间(0.062 秒)
On the existence and number of $(k+1)$-kings in $k$-quasi-transitive digraphs
digraph k-king quasi-transitive digraph k-quasi-transitive digraph
font style='font-size:12px;'>
2012/6/30
Let $D=(V(D), A(D))$ be a digraph and $k \ge 2$ an integer. We say that $D$ is $k$-quasi-transitive if for every directed path $(v_0, v_1,..., v_k)$ in $D$, then $(v_0, v_k) \in A(D)$ or $(v_k, v_0) \...
Amenable, transitive and faithful actions of groups acting on trees
Amenable transitive faithful actions groups trees
font style='font-size:12px;'>
2012/3/1
We study under which condition an amalgamated free product or an HNN-extension over a finite subgroup admits an amenable, transitive and faithful action on an infinite countable set. We show that such...
Experimenting with Transitive Verbs in a DisCoCat
Transitive Verbs DisCoCat Experimenting Category Theory
font style='font-size:12px;'>
2011/10/8
Abstract: Formal and distributional semantic models offer complementary benefits in modeling meaning. The categorical compositional distributional (DisCoCat) model of meaning of Coecke et al. (arXiv:1...
Transitive Lie algebras of vector fields---an overview
Transitive Lie algebras vector fields Differential Geometry
font style='font-size:12px;'>
2011/9/6
Abstract: This overview paper is intended as a quick introduction to Lie algebras of vector fields. Originally introduced in the late 19th century by Sophus Lie to capture symmetries of ordinary diffe...
Transitive conformal holonomy groups
conformal holonomy groups Differential Geometry
font style='font-size:12px;'>
2011/8/24
Abstract: For $(M,[g])$ a conformal manifold of signature $(p,q)$ and dimension at least three, the conformal holonomy group $\mathrm{Hol}(M,[g]) \subset O(p+1,q+1)$ is an invariant induced by the can...
Fissioned triangular schemes via sharply 3-transitive groups
triangular scheme fusion scheme fission scheme orthogonal space orthogonal groups
font style='font-size:12px;'>
2011/8/23
Abstract: n [D. de Caen, E.R. van Dam. Fissioned triangular schemes via the cross-ratio, {Europ. J. Combin.}, 22 (2001) 297-301], de Caen and van Dam constructed a fission scheme $\FT(q+1)$ of the tri...
Transitive Sets and Cyclic Quadrilaterals
Transitive Sets Cyclic Quadrilaterals
font style='font-size:12px;'>
2011/2/28
Motivated by some questions in Euclidean Ramsey theory, our aim in this note is to show that there exists a cyclic quadrilateral that does not embed into any transitive set (in any dimension). We show...
Transitive Sets in Euclidean Ramsey Theory
Transitive Euclidean Ramsey Theory
font style='font-size:12px;'>
2011/1/19
A finite set X in some Euclidean space Rn is called Ramsey if for any k there is a d such that whenever Rd is k-coloured it contains a monochromatic set congruent to X. This notion was introduced by E...
Infinitely transitive actions on real affine suspensions
Infinite transitive action real algebraic variety suspension
font style='font-size:12px;'>
2011/1/19
A group G acts infinitely transitively on a set Y if for every positive integer m, its
action is m-transitive on Y . Given a real affine algebraic variety Y of dimension greater than
or equal to 2, ...
On the base size of a transitive group with solvable point stabilizer
the base size transitive group
font style='font-size:12px;'>
2010/11/23
We prove that the base size of a transitive group $G$ with solvable point stabilizer is not greater than $k$ provided the same statement holds for every group of $G$-induced automorphisms of each nona...
Topological transitive Abelian subgrouns of GL(n,R)
Topological Abelian subgrouns of GL(n,R)
font style='font-size:12px;'>
2010/11/8
We give a complete characterization of abelian subgroups of GL(n, R) with a locally dense (resp. dense) orbit in R^n. For finitely generated subgroups, this characterization is explicit and it is used...
On the Stabilizer of the Automorphism Group of a 4-valent Vertex-transitive Graph with Odd-prime-power Order
cayley graphs s -arc-transitive vertex-transitive
font style='font-size:12px;'>
2007/12/11
Let X be a 4-valent connected vertex-transitive graph with odd-prime-power order p~k (k ≥ 1), and let A be the full automorphism group of X. In this paper, we prove that the stabilizer Av of a vertex ...
Barely Transitive Groups
Locally finite group barely transitive group infinite permutation group
font style='font-size:12px;'>
2010/2/26
This is a survey article on barely transitive groups. It also involves some recent results in the case of a non-locally finite barely transitive group.
Splitting of Sharply 2-Transitive Groups of Characteristic 3
Sharply 2-transitive groups Permutation groups
font style='font-size:12px;'>
2010/2/26
We give a group theoretic proof of the splitting of sharply 2-transitive groups of characteristic 3.
On Torsion-Free Barely Transitive Groups
Barely transitive commensurable
font style='font-size:12px;'>
2010/3/1
B. Hartley asked the following question: Does there exist a torsion free barely transitive group? Existence of torsion free simple barely transitive group is also unknown. We answer the latter questio...