In the talk we will focus on automorphisms of \(\omega_1\)-trees. We will discuss how to add an automorphism to an \(\omega_1\)-tree with a well-behaved forcing, and we will identify some restrictions for these forcings (for instance, they cannot be \(\sigma\)-closed for Suslin trees). In the last part of the talk, we will mention some open questions regarding automorphisms of \(\omega_1\)-trees.
Automorphisms of trees
12.10.2023 17:30 - 18:15
Organiser:
KGRC
Location: