Results 1 to 10 of about 7,376 (98)

Groups of finite Morley rank with a generically multiply transitive action on an abelian group [PDF]

open access: bronzeModel Theory, 2022
We investigate the configuration where a group of finite Morley rank acts definably and generically $m$-transitively on an elementary abelian $p$-group of Morley rank $n$, where $p$ is an odd prime, and $m\geqslant n$. We conclude that $m=n$, and the action is equivalent to the natural action of $\operatorname{GL}_n(F)$ on $F^n$ for some algebraically ...
Berkman, Ayşe, Borovik, Alexandre
openaire   +3 more sources

Groups of finite Morley rank with a generically sharply multiply transitive action [PDF]

open access: greenJournal of Algebra, 2018
We prove that if $G$ is a group of finite Morley rank which acts definably and generically sharply $n$-transitively on a connected abelian group $V$ of Morley rank $n$ with no involutions, then there is an algebraically closed field $F$ of characteristic $\ne 2$ such that $V$ has a structure of a vector space of dimension $n$ over $F$ and $G$ acts on ...
Berkman, Ay��e, Borovik, Alexandre
  +9 more sources

Normal subgroups of finite multiply transitive permutation groups [PDF]

open access: bronzeNagoya Mathematical Journal, 1974
Wagner [5] and Ito [2] proved the following theorems respectively.THEOREM OF WAGNER. Let G be a triply transitive permutation group on a set Ω = {1,2, …, n}, and let n be odd and n > 4. If H is a normal subgroup (≠1) of G, then H is also triply transitive on Ω.
Eiichi Bannaĭ
openaire   +3 more sources

Kinematic self-similar locally rotationally symmetric models [PDF]

open access: yes, 1998
A brief summary of results on kinematic self-similarities in general relativity is given. Attention is focussed on locally rotationally symmetric models admitting kinematic self-similar vectors.
A M Sintes   +21 more
core   +2 more sources

Hurwitz Monodromy and Full Number Fields [PDF]

open access: yes, 2014
We give conditions for the monodromy group of a Hurwitz space over the configuration space of branch points to be the full alternating or symmetric group on the degree.
Roberts, David P., Venkatesh, Akshay
core   +3 more sources

Galois theory on the line in nonzero characteristic [PDF]

open access: yes, 1992
The author surveys Galois theory of function fields with non-zero caracteristic and its relation to the structure of finite permutation groups and matrix groups.Comment: 66 pages.
Abhyankar, Shreeram S.
core   +2 more sources

Linear growth for semigroups which are disjoint unions of finitely many copies of the free monogenic semigroup [PDF]

open access: yes, 2015
We show that every semigroup which is a finite disjoint union of copies of the free monogenic semigroup (natural numbers under addition) has linear growth.
Abughazalah, Nabilah, Etingof, Pavel
core   +2 more sources

Bounds on the diameter of Cayley graphs of the symmetric group [PDF]

open access: yes, 2012
In this paper we are concerned with the conjecture that, for any set of generators S of the symmetric group of degree n, the word length in terms of S of every permutation is bounded above by a polynomial of n.
C.E. Praeger   +23 more
core   +4 more sources

Graphs having no quantum symmetry [PDF]

open access: yes, 2006
We consider circulant graphs having $p$ vertices, with $p$ prime. To any such graph we associate a certain number $k$, that we call type of the graph. We prove that for $p>>k$ the graph has no quantum symmetry, in the sense that the quantum automorphism ...
Banica, Teodor   +2 more
core   +4 more sources

Two Generalizations of Homogeneity in Groups with Applications to Regular Semigroups [PDF]

open access: yes, 2014
Let $X$ be a finite set such that $|X|=n$ and let $i\leq j \leq n$. A group $G\leq \sym$ is said to be $(i,j)$-homogeneous if for every $I,J\subseteq X$, such that $|I|=i$ and $|J|=j$, there exists $g\in G$ such that $Ig\subseteq J$.
Araújo, João, Cameron, Peter J.
core   +2 more sources

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