SU$-linear operations in complex cobordism and the $c_1$-spherical bordism theory

We study the $SU$-linear operations in complex cobordism and prove that they are generated by the well-known geometric operations $\partial_i$. For the theory $W$ of $c_1$-spherical bordism, we describe all $SU$-linear multiplications on $W$ and projections $MU \to W$. We also analyse complex orient...

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Veröffentlicht in:Izvestiya. Mathematics 2023, Vol.87 (4), p.768-797
Hauptverfasser: Panov, Taras Evgenievich, Chernykh, George
Format: Artikel
Sprache:eng
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Zusammenfassung:We study the $SU$-linear operations in complex cobordism and prove that they are generated by the well-known geometric operations $\partial_i$. For the theory $W$ of $c_1$-spherical bordism, we describe all $SU$-linear multiplications on $W$ and projections $MU \to W$. We also analyse complex orientations on $W$ and the corresponding formal group laws $F_W$. The relationship between the formal group laws $F_W$ and the coefficient ring $W_*$ of the $W$-theory was studied by Buchstaber in 1972. We extend his results by showing that for any $SU$-linear multiplication and orientation on $W$, the coefficients of the corresponding formal group law $F_W$ do not generate the ring $W_*$, unlike the situation with complex bordism.
ISSN:1064-5632
1468-4810
DOI:10.4213/im9334e