@InProceedings{kori_et_al:LIPIcs.CONCUR.2021.21, author = {Kori, Mayuko and Hasuo, Ichiro and Katsumata, Shin-ya}, title = {{Fibrational Initial Algebra-Final Coalgebra Coincidence over Initial Algebras: Turning Verification Witnesses Upside Down}}, booktitle = {32nd International Conference on Concurrency Theory (CONCUR 2021)}, pages = {21:1--21:22}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-203-7}, ISSN = {1868-8969}, year = {2021}, volume = {203}, editor = {Haddad, Serge and Varacca, Daniele}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2021.21}, URN = {urn:nbn:de:0030-drops-143982}, doi = {10.4230/LIPIcs.CONCUR.2021.21}, annote = {Keywords: initial algebra, final coalgebra, fibration, category theory} }