Equivariant E(n)-local spectrum image conjecture

Let GG be a finite group. Let \SHGEnc\SHGEn^c denote the compact objects in the E(n)E(n)-local equivariant stable homotopy category and let \SHGc\SHG^c denote the compact objects in the equivariant stable homotopy category. The extension-of-scalars functor induces a continuous injective map

φG ⁣:\Spc(\SHGEnc)\Spc(\SHGc).\varphi_G\colon \Spc(\SHGEn^c)\to\Spc(\SHG^c).

Equivariant E(n)-local spectrum image conjecture. The map φG\varphi_G is a homeomorphism onto its image.

The preceding discussion establishes continuity and injectivity, while explicitly noting that the authors are unable to prove that the continuous bijection onto the image is a homeomorphism. Thus the topological assertion remains open in the source.

Sources & referencesView supporting material

Primary source

Tobias Barthel, Drew Heard and Beren Sanders, “Stratification in tensor triangular geometry with applications to spectral Mackey functors”, arXiv:2106.15540 (2023).

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