Timeline for Framed bordism and string bordism in 3-dimensions vs topological modular form
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
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| Nov 30, 2023 at 8:56 | comment | added | Lennart Meier | There are maps of ring spectra $\mathbb{S} \to \mathrm{MString} \to \mathrm{TMF}$, inducing a map $\pi_3\mathbb{S} \to \pi_3\mathrm{MString} \to \pi_3\mathrm{TMF}$, which happen to be isomorphisms. (Indeed, the first map is an isomorphism by the connectivity of $\mathrm{BString}$; in general, $\pi_*\mathrm{MString} \to \pi_*\mathrm{tmf}$ is only a surjection and not an isomorphism; here, $\mathrm{tmf}$ is a connective variant of $\mathrm{TMF}$. See arxiv.org/abs/1911.10534) | |
| Nov 27, 2023 at 17:14 | history | asked | wonderich | CC BY-SA 4.0 |