1. Maximal chains in^ωω and ultrapowers of the integers

   • Saharon Shelah
   • Juris Steprāns

   OriginalPaper Pages: 305 - 319

2. Spaces with combinators

   • N. Georgieva

   OriginalPaper Pages: 321 - 339

3. Simplified RCS iterations

   • Chaz Schlindwein

   OriginalPaper Pages: 341 - 349

4. Busy beaver competition and Collatz-like problems

   • Pascal Michel

   OriginalPaper Pages: 351 - 367

5. The differences between Kurepa trees and Jech-Kunen trees

   • Renling Jin

   OriginalPaper Pages: 369 - 379