Call of PhD positions at the Vienna School of Mathematics (VSM)
https://www.oemg.ac.at/db/Jobs/3954/
https://www.vsmath.at/current_call/
Several open PhD positions are announced, among others in
Combinatorics, Dynamics, Logic and Set Theory, Model Theory, Optimization,
Probability Thory, Theoretical Computer Science.
See the above links for further information.