Abstract
In this note, it is shown that the Hilbert–Poincaré series for the rational homology of the free loop space on a moment-angle complex is a rational function if and only if the moment-angle complex is a product of odd spheres and a disk. A partial result is included for the Davis–Januszkiewicz spaces. The opportunity is taken to correct the result (Bahri et al., Proceedings of the Steklov Institute of Mathematics, Russian Academy of Sciences, vol. 286, pp. 219–223. doi:10.1134/S0081543814060121, 2014) which used a theorem from Berglund and Jöllenbeck (J Algebra 315:249–273, 2007).
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Acknowledgments
The authors are grateful to Ran Levi and Kathryn Hess for useful suggestions and also to Jason McCullough. The comments of the referee have improved the exposition. A. Bahri was supported in part by Grant No. 210386 from the Simons Foundation.
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This paper is dedicated to Samuel Gitler Hammer who brought us much joy and interest in mathematics.
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Bahri, A., Bendersky, M., Cohen, F.R. et al. On the free loop spaces of a toric space. Bol. Soc. Mat. Mex. 23, 257–265 (2017). https://doi.org/10.1007/s40590-016-0124-8
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DOI: https://doi.org/10.1007/s40590-016-0124-8
Keywords
- Rational homotopy
- Free loop space
- Rationally elliptic and hyperbolic
- Moment-angle complex
- Davis–Januszkiewicz space