Abstract (eng)
The paper is centered around the study of regularity properties of the real line. The notion of regularity is presented in a rather general way, by using arboreal forcings. In particular, we focus on questions concerning the separation of different regularity properties. More precisely, in some cases, given P, Q arboreal forcings, we construct a model where all sets of reals are P-measurable
and a non-Q-measurable set exists. A similar work is done for statements concerning the 2nd level of projective hierarchy. Finally, we also deal with questions about measure and category for the generalized Cantor space. In particular, we introduce a new notion of measure
on such a space, which allows us to define the corresponding notion of measurability and the related uncountable random forcing.