@InProceedings{ferrarotti_et_al:LIPIcs.CSL.2018.22, author = {Ferrarotti, Flavio and Van den Bussche, Jan and Virtema, Jonni}, title = {{Expressivity Within Second-Order Transitive-Closure Logic}}, booktitle = {27th EACSL Annual Conference on Computer Science Logic (CSL 2018)}, pages = {22:1--22:18}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-088-0}, ISSN = {1868-8969}, year = {2018}, volume = {119}, editor = {Ghica, Dan R. and Jung, Achim}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2018.22}, URN = {urn:nbn:de:0030-drops-96896}, doi = {10.4230/LIPIcs.CSL.2018.22}, annote = {Keywords: Expressive power, Higher order logics, Descriptive complexity} }