@InProceedings{gouveia_et_al:LIPIcs.CSL.2017.38, author = {Gouveia, Maria Jo\~{a}o and Santocanale, Luigi}, title = {{Aleph1 and the Modal mu-Calculus}}, booktitle = {26th EACSL Annual Conference on Computer Science Logic (CSL 2017)}, pages = {38:1--38:16}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-045-3}, ISSN = {1868-8969}, year = {2017}, volume = {82}, editor = {Goranko, Valentin and Dam, Mads}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2017.38}, URN = {urn:nbn:de:0030-drops-76926}, doi = {10.4230/LIPIcs.CSL.2017.38}, annote = {Keywords: Modal mu-calculus, regular cardinal, continuous function, aleph1, omega1, closure ordinal, ordinal sum} }