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pro vyhledávání: '"Rivera Madrid, Ismael E."'
Denote by $\mathcal{N}\!\mathcal{A}$ and $\mathcal{MA}$ the ideals of null-additive and meager-additive subsets of $2^\omega$, respectively. We prove in ZFC that $\mathrm{add}(\mathcal{N}\!\mathcal{A})=\mathrm{non}(\mathcal{N}\!\mathcal{A})$ and intr
Externí odkaz:
http://arxiv.org/abs/2401.15364
We show that certain type of tree forcings, including Sacks forcing, increases the covering of the strong measure zero ideal $\mathcal{SN}$. As a consequence, in Sacks model, such covering number is equal to the size of the continuum, which indicates
Externí odkaz:
http://arxiv.org/abs/1902.01508
Autor:
Rivera Madrid, Ismael E., Rodríguez, Beatriz Álvarez, Bustamante, Oswaldo, Baena, Oscar Jaime Restrepo, Menéndez-Aguado, Juan M.
Publikováno v:
In Powder Technology December 2014 268:373-376
Publikováno v:
Revista Colombiana de Matemáticas. 2019, Vol. 53 Issue 2, p109-123. 15p.
Akademický článek
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Publikováno v:
Archive for Mathematical Logic; Jul2022, Vol. 61 Issue 5/6, p599-610, 12p
Publikováno v:
Revista Colombiana de Matemáticas, Volume: 53, Issue: 2, Pages: 109-123, Published: 20 MAR 2020
By coding Polish metric spaces with metrics on countable sets, we propose an interpretation of Polish metric spaces in models of ZFC and extend Mostowski's classical theorem of absoluteness of analytic sets for any Polish metric space in general. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______618::eefda701e37a8f877c6c4d50dc4c376c
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0034-74262019000200109&lng=en&tlng=en
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0034-74262019000200109&lng=en&tlng=en