𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On some questions on Borel 1 selections

✍ Scribed by Jack Ceder

Book ID
112908234
Publisher
Springer Milan
Year
1984
Tongue
Italian
Weight
518 KB
Volume
33
Category
Article
ISSN
0009-725X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Borel on the Questions Versus Borel on t
Borel on the Questions Versus Borel on the Answers
✍ Heike Mildenberger 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 433 KB

## Abstract We consider morphisms (also called Galois‐Tukey connections) between binary relations that are used in the theory of cardinal characteristics. In [8] we have shown that there are pairs of relations with no Borel morphism connecting them. The reason was a strong impact of the first of th

On some questions about selective separa
On some questions about selective separability
✍ Liljana Babinkostova 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 64 KB

## Abstract CH implies that selective separability is not preserved by finite powers (solving [3, Problems 3.7 and 3.9]). In ZFC, selective separability does not imply H‐separability (solving [4, Problem 34]) (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)