EN
CONTENTS
Introduction....................................................................................... 5
0. Set theory M.................................................................................. 6
1. Reflection principles in M.......................................................... 12
2. The trees....................................................................................... 18
3. Ordinal trees. Constructibility in M........................................... 25
4. Minimal model for M................................................................... 30
5. Forcing in M, independence results for M.............................. 34
6. Hierarchy of formulas in M......................................................... 37
References....................................................................................... 41