Milnor's isotopy invariant using spectral sequence? - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-22T13:10:22Z http://mathoverflow.net/feeds/question/41676 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/41676/milnors-isotopy-invariant-using-spectral-sequence Milnor's isotopy invariant using spectral sequence? Topologieee 2010-10-10T13:25:15Z 2011-01-21T13:53:45Z <p>I'm reading stalling's article "the augmented ideal in group ring" in Ann. Math. Studies 84(R. H. Fox memorial volume) In his final remark, he says that Milnor's link invariant could be interpreted by using Spectral sequence.(see Milnor, Isotopy of links, Algebraic geometry and topology, Princeton press) </p> <p>Are there anybody who knows about further advances in this story??</p> http://mathoverflow.net/questions/41676/milnors-isotopy-invariant-using-spectral-sequence/41692#41692 Answer by Ryan Budney for Milnor's isotopy invariant using spectral sequence? Ryan Budney 2010-10-10T16:31:31Z 2010-10-10T16:31:31Z <p>Have you read the Wikipedia page on Massey products? </p> <p><a href="http://en.wikipedia.org/wiki/Massey_product" rel="nofollow">http://en.wikipedia.org/wiki/Massey_product</a></p> <p>It mentions Massey products are differentials in the Atiyah-Hirzebruch spectral sequence for a K-theory with local coefficients. The Atiyah-Hirzebruch spectral sequence is to a (co)homology theory what cellular (co)homology is for standard singular (co)homology. </p>