@InProceedings{sheng_et_al:LIPIcs.DISC.2021.36, author = {Sheng, Yilun and Ellen, Faith}, title = {{Extension-Based Proofs for Synchronous Message Passing}}, booktitle = {35th International Symposium on Distributed Computing (DISC 2021)}, pages = {36:1--36:17}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-210-5}, ISSN = {1868-8969}, year = {2021}, volume = {209}, editor = {Gilbert, Seth}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2021.36}, URN = {urn:nbn:de:0030-drops-148380}, doi = {10.4230/LIPIcs.DISC.2021.36}, annote = {Keywords: Set agreement, lower bounds, valency arguments} }