Proceedings of the International Geometry Center

ISSN-print: 2072-9812
ISSN-online: 2409-8906
ISO: 26324:2012
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Cohomology algebra of mapping spaces between quaternion Grassmannians

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Oteng Maphane

Abstract

Let Gk,n(ℍ) for 2≤k<n denote the quaternion Grassmann manifold of k-dimensional vector subspaces of ℍn. In this paper we compute, in terms of the Sullivan models, the rational cohomology algebra of the component of the inclusion i: Gk,n(ℍ) → Gk,n+r(ℍ) in the space of mappings from Gk,n(ℍ) to Gk,n+r(ℍ) for r≥1 and, more generally, we show that the cohomology of Map(Gk,n(ℍ),Gk,n+r(ℍ);i) contains a truncated algebra ℚ[x]x4r+n+k^{2}-nk for n≥4.

Keywords:
Grassmann manifolds, mapping space, Sullivan model, L_∞-algebra

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How to Cite
Maphane, O. (2023). Cohomology algebra of mapping spaces between quaternion Grassmannians. Proceedings of the International Geometry Center, 16(2), 161-172. https://doi.org/10.15673/pigc.v16i2.2453
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Papers