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arXiv · 2501.15584

Rational G-spectra for rank 2 toral groups of mixed type

J. P. C. Greenlees
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Abstract

We give an explicit and calculable algebraic model for the block of rational G-spectra on full subgroups when G has identity component a 2-torus T, and component group of order 2 acting non-trivially on H_1(T). The example of particular interest is the normalizer of the maximal torus in U(2), which constitutes one of the most complicated blocks in the analysis of SU(3). This builds on the determination of subgroups up to conjugacy in arXiv 2501.06914

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J. P. C. Greenlees. 2025-01-26. Rational G-spectra for rank 2 toral groups of mixed type. https://arxiv.org/abs/2501.15584

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