Rational Cohomology Algebra of Mapping Spaces between Complex Grassmannians

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We consider the complex Grassmannian Grk,n of k-dimensional subspaces of n. There is a natural inclusion in,r:Grk,nGrk,n+r. Here, we use Sullivan models to compute the rational cohomology algebra of the component of the inclusion in,r in the space of mappings from Grk,n to Grk,n+r for r≥1 and in particular to show that the cohomology of mapGrn,k,Grn,k+r;in,r contains a truncated algebra x/xr+n+k2-nk, where x=2, for k≥2 and n≥4.




Otieno, P. A., Gatsinzi, J. B., & Onyango-Otieno, V. (2020). Rational Cohomology Algebra of Mapping Spaces between Complex Grassmannians. International Journal of Mathematics and Mathematical Sciences, 2020. https://doi.org/10.1155/2020/9385153

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