In this thesis we study flags of singular holomorphic foliations, formed by two foliations. We are interested in investigating characteristic classes for this structure and its consequences. In this work we develop a residue ...

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 ...

Warning signs are signs, pressures, opportunities, projects or organizational characteristics that may indicate the existence of fraud, sending a newsletter, the occurrence of an irregular event. Knowing red flags and ...

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, where gα is the root space of the root ...