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The Structure of the Spin^h Bordism Spectrum

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arxiv 2306.17709 v2 pith:SJA4GZLU submitted 2023-06-30 math.AT

classification math.AT
keywords spinbordismmathrmmspincomputemanifoldsmathbbspectrum
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abstract

Spin$^h$ manifolds are the quaternionic analogue to Spin$^c$ manifolds. We compute the spin$^h$ bordism groups at the prime 2 by proving a structure theorem for the cohomology of the spin$^h$ bordism spectrum $\mathrm{MSpin}^h$ as a module over the mod 2 Steenrod algebra. This provides a 2-local splitting of $\mathrm{MSpin}^h$ as a wedge sum of familiar spectra. We also compute the decomposition of $H^*(\mathrm{MSpin}^h;\mathbb{Z}/2\mathbb{Z})$ explicitly in degrees up through 30 via a counting process.

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Cited by 1 Pith paper

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  1. Global Structure in the Presence of a Topological Defect

    math-ph 2025-01 conditional novelty 6.0 of 10

    Characteristic structures on manifolds with codimension-2 defects are translated into twisted spin bordism, low-degree groups are computed, and a Pontryagin-Thom obstruction to breaking Z/2 higher-form symmetries is i...

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