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A method to find generators of a semi-simple Lie group via the topology of its flag manifolds
(2017-10-01)
In this paper we continue to develop the topological method to get semigroup generators of semi-simple Lie groups. Consider a subset Γ ⊂ G that contains a semi-simple subgroup G1 of G. If one can show that Γ does not leave ...
Some considerations about cohomology of finite groups
(2013)
In this work we present some considerations about cohomology of finite groups. In the first part we use the restriction map in cohomology to obtain some results about subgroups of finite index in a group. In the second ...
The occurrence of group-a (and its t-types) group-c and group-g of beta-hemolytic Streptococci in school-children in Araraquara SP, Brazil, september 1979
(Soc Brasileira Microbiologia, 1983-01-01)
On uniformly quasisymmetric groups of circle diffeomorphisms
(SUOMALAINEN TIEDEAKATEMIA, 2006)
This article deals with the conjugacy problem of uniformly quasisymmetric groups of circle homeomorphims to groups of Mobius transformations. We prove that if the involved maps have some degree of regularity and the uniform ...
Growth of groups and diffeomorphisms of the interval
(BIRKHAUSER VERLAG AG, 2008-09)
We prove that, for all α > 0, every finitely generated group of C1+α diffeomorphisms of the
interval with sub-exponential growth is almost nilpotent. Consequently, there is no group of C1+α interval
diffeomorphisms having ...
Reduction of cocycles and groups of diffeomorphisms of the circle
(BELGIAN MATHEMATICAL SOC TRIOMPHE, 2006-06)
We prove two theorems of reduction of cocycles taking values in the group of diffeomorphisms of the circle. They generalize previous results obtained by the author concerning rigidity for smooth actions on the circle of ...
Business group characteristics and firm operating performance: Evidence from Chile
(Emerald, 2014)
Purpose – The purpose of this paper is to examine the impact of business group characteristics
on firm-operating performance in Chile.
Design/methodology/approach – Using a multiple regression model, this study examines ...
On the Isometry Groups of Invariant Lorentzian Metrics on the Heisenberg Group
(Birkhauser Verlag Ag, 2014-01)
This work concerns the invariant Lorentzian metrics on the Heisenberg Lie group of dimension three H3(R) and the bi-invariant metrics on the solvable Lie groups of dimension four. We start with the indecomposable Lie groups ...