3 papers
math.LO2024
Slalom numbers
Miguel A. Cardona, Viera Gavalova, Diego A. Mejia +2
The paper is an extensive and systematic study of cardinal invariants we call slalom numbers, describing the combinatorics of sequences of sets of natural numbers. Our general appr…
math.LO2019
The covering number of the strong measure zero ideal can be above almost everything else
Miguel A. Cardona, Diego A. Mejía, Ismael E. Rivera-Madrid
We show that certain type of tree forcings, including Sacks forcing, increases the covering of the strong measure zero ideal . As a consequence, in Sacks model, such…
math.RT2018
Some infinitely generated non projective modules over path algebras and their extensions under Martin's Axiom
Ayako Itaba, Diego A. Mejia, Teruyuki Yorioka
In this paper it is proved that, when is a quiver that admits some closure, for any algebraically closed field and any finite dimensional -linear representation $\mathca…