@Inproceedings{EPTCS339.4, author = {Alsmann, Eric and Bruse, Florian and Lange, Martin}, year = {2021}, title = {Separating the Expressive Power of Propositional Dynamic and Modal Fixpoint Logics}, editor = {Dardha, Ornela and Castiglioni, Valentina}, booktitle = {{\rm Proceedings Combined 28th International Workshop on} Expressiveness in Concurrency {\rm and 18th Workshop on} Structural Operational Semantics, {\rm Paris, France (online event), 23rd August 2021}}, series = {Electronic Proceedings in Theoretical Computer Science}, volume = {339}, publisher = {Open Publishing Association}, pages = {10-26}, doi = {10.4204/EPTCS.339.4}, }