Controllability of control systems on complex simple lie groups and the topology of flag manifolds

AL dos Santos, LABS Martin - Journal of Dynamical and Control Systems, 2013 - Springer
Let S be a subsemigroup with nonempty interior of a connected complex simple Lie group G.
It is proved that S= G if S contains a subgroup G (α)≈ Sl (2, C) generated by the exp g_±α …

Invariant cones and convex sets for bilinear control systems and parabolic type of semigroups

OG Do Rocio, LAB San Martin, AJ Santana - Journal of dynamical and …, 2006 - Springer
INVARIANT CONES AND CONVEX SETS FOR BILINEAR CONTROL SYSTEMS AND
PARABOLIC TYPE OF SEMIGROUPS 1. Introduction Letx = Ax + uBx Page 1 Journal of …

Covering space for monotonic homotopy of trajectories of control systems

F Colonius, E Kızıl, LAB San Martin - Journal of Differential Equations, 2005 - Elsevier
This paper considers monotonic (or causal) homotopy between trajectories of control
systems. The main result is the construction of an analogue of the simply connected …

Control sets on maximal compact subgroups

M Patrão, L Santos - Mathematics of Control, Signals, and Systems, 2024 - Springer
Let G be a noncompact connected semisimple Lie group, with finite center. In this paper we
study the action of semigroups S of G, with nonempty interior, acting on maximal compact …

Flag type of semigroups: a survey

LABS Martin - … in Mathematics and Applications: Celebrating 50 years …, 2018 - Springer
In this chapter, we present an overview of the theory of semigroups in semi-simple Lie
groups and its applications to dynamical systems, control systems, and random dynamical …

A method to find generators of a semi-simple Lie group via the topology of its flag manifolds

AL dos Santos, LAB San Martin - Semigroup Forum, 2017 - Springer
In this paper we continue to develop the topological method to get semigroup generators of
semi-simple Lie groups. Consider a subset Γ ⊂ G Γ⊂ G that contains a semi-simple …

On the classification of control sets

F Colonius, M Spadini - Dynamics, Bifurcations, and Control, 2002 - Springer
The controllability behavior of nonlinear control systems is described by associating
semigroups to locally maximal subsets of complete controllability, ie, local control sets …

Mid-reversibility properties of semigroup actions on homogeneous spaces

RA Reis, LAB San Martin, VHL Rocha - Semigroup Forum, 2022 - Springer
In this paper we study mid-reversibility of subsemigroups acting on homogeneous spaces.
The mid-reversor set of a subsemigroup is defined and it is described in terms of the …

Reversibility properties of semigroup actions on homogeneous spaces

RA dos Reis, LAB San Martin - Semigroup Forum, 2012 - Springer
This paper studies reversibility of subsemigroups acting on homogeneous spaces. The
reversor set of a subsemigroup is defined and it is related to the invariant control sets for …

Semigroups in symmetric Lie groups

LAB San Martin - Indagationes Mathematicae, 2007 - Elsevier
Let G be a Lie group and LCG a Lie subgroup. We give necessary and sufficient conditions
for a family of cosets of L to generate a subsemigroup with nonempty interior in G. We apply …