@InProceedings{nutov:LIPIcs.ESA.2017.61, author = {Nutov, Zeev}, title = {{On the Tree Augmentation Problem}}, booktitle = {25th Annual European Symposium on Algorithms (ESA 2017)}, pages = {61:1--61:14}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-049-1}, ISSN = {1868-8969}, year = {2017}, volume = {87}, editor = {Pruhs, Kirk and Sohler, Christian}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ESA.2017.61}, URN = {urn:nbn:de:0030-drops-78345}, doi = {10.4230/LIPIcs.ESA.2017.61}, annote = {Keywords: Tree augmentation, Logarithmic costs, Approximation algorithm, Half-integral extreme points, Integrality gap} }