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Analogues of the Atiyah--Wall exact sequences for cobordism groups of singular maps
[article]
2022
Classical results of Rohlin, Dold, Wall and Atiyah yield two exact sequences that connect the oriented and unoriented (abstract) cobordism groups $Ω_n$ and $\mathfrak{N}_n$. In this paper we present analogous exact sequences connecting the oriented and unoriented cobordism groups of maps with prescribed singularities. This gives positive answer to a fifteen-year-old question posed by Szűcs and has interesting consequences even in the case of cobordisms of immersions.
doi:10.48550/arxiv.2201.09014
fatcat:bjmh4sontnfnxppl56hiwiddnu