"Non UBC"@en . "DSpace"@en . "Hedden, Matthew"@en . "2014-08-06T22:29:57Z"@en . "2012-04-17"@en . "https://circle.library.ubc.ca/rest/handle/2429/49194?expand=metadata"@en . "49 minutes"@en . "video/mp4"@en . ""@en . "Author affiliation: Michigan State University"@en . "10.14288/1.0043265"@en . "eng"@en . "Unreviewed"@en . "Vancouver : University of British Columbia Library"@en . "Banff International Research Station for Mathematical Innovation and Discovery"@en . "Attribution-NonCommercial-NoDerivs 2.5 Canada"@en . "http://creativecommons.org/licenses/by-nc-nd/2.5/ca/"@en . "Faculty"@en . "BIRS Workshop Lecture Videos (Banff, Alta)"@en . "Mathematics"@en . "Differential geometry"@en . "Manifolds and cell complexes"@en . "Recent progress on topologically slice knots"@en . "Moving Image"@en . "http://hdl.handle.net/2429/49194"@en .