@InProceedings{baanen_et_al:LIPIcs.ITP.2021.5, author = {Baanen, Anne and Dahmen, Sander R. and Narayanan, Ashvni and Nuccio Mortarino Majno di Capriglio, Filippo A. E.}, title = {{A Formalization of Dedekind Domains and Class Groups of Global Fields}}, booktitle = {12th International Conference on Interactive Theorem Proving (ITP 2021)}, pages = {5:1--5:19}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-188-7}, ISSN = {1868-8969}, year = {2021}, volume = {193}, editor = {Cohen, Liron and Kaliszyk, Cezary}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ITP.2021.5}, URN = {urn:nbn:de:0030-drops-139004}, doi = {10.4230/LIPIcs.ITP.2021.5}, annote = {Keywords: formal math, algebraic number theory, commutative algebra, Lean, mathlib} }