The spherical framed Floer spectrum identification conjecture

Let Rsfr\mathfrak{R}^{\mathrm{sfr}} be the spherically framed endomorphism ring spectrum, let BJBJ denote the 1-fold delooping of the JJ-homomorphism, and let hofib(BJ)\mathrm{hofib}(BJ) be its homotopy fiber.

Spherical framed Floer spectrum identification conjecture. There is a homotopy equivalence of ring spectra

RsfrΣhofib(BJ).\mathfrak{R}^{\mathrm{sfr}}\simeq\Sigma^\infty\mathrm{hofib}(BJ).

This identifies the spherically framed Floer endomorphism spectrum with a suspension spectrum and is a proposed structural description related to the comparison with spherical framed bordism. The supplied text gives no evidence that this identification has been resolved.

Sources & referencesView supporting material

Primary source

Kenneth Blakey and Ciprian Mircea Bonciocat, “Parameterized Lagrangian Floer homotopy”, arXiv:2506.20122 (2025).

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