Title: $\Delta_n^0$-categorical linear orderings

Speaker: Frolov A.N.

I'll talk about $\Delta_n^0$-categorical linear orderings.
In particular, I will show that there is a strictly
$\Delta_{n+1}^0$-categorical
linear ordering. A linear ordering is strictly
$\Delta_{n+1}^0$-categorical, if
it is $\Delta_{n+1}^0$-categorical and it is not $\Delta_{n}^0$-categorical.
Also I'll talk about $\Delta_{n}^0$-stable linear orderings.