Algebraic Topology July 2016 Uchicago Cobordism 2 Inna Zakharevich
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http://math.uchicago.edu/~chicagotopology2/
http://math.uchicago.edu/~chicagotopology2/UChicago-summerschool-2016-3.pdf
Cobordism groups are stable homotopy groups of Thom spaces.