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New York Journal of Mathematics
Volume 26 (2020), 931-949

  

Apurva Seth and Prahlad Vaidyanathan

AF-algebras and rational homotopy theory

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Published: September 9, 2020.
Keywords: Nonstable K-theory, C*-algebras.
Subject: Primary 46L85; Secondary 46L80.

Abstract
We give a procedure to compute the rational homotopy groups of the group of quasi-unitaries of an AF-algebra. As an application, we show that an AF-algebra is K-stable if and only if it is rationally K-stable.

Acknowledgements

The first named author is supported by UGC Junior Research Fellowship No. 1229 and the second named author was partially supported by SERB Grant YSS/2015/001060. The authors would like to thank the referee for a careful reading of the manusript, and for pointing out an error in an earlier version of the paper.


Author information

Apurva Seth:
Department of Mathematics
Indian Institute of Science Education and Research Bhopal
Bhopal ByPass Road, Bhauri
Bhopal 462066, Madhya Pradesh, India

apurva17@iiserb.ac.in

Prahlad Vaidyanathan:
Department of Mathematics
Indian Institute of Science Education and Research Bhopal
Bhopal ByPass Road, Bhauri
Bhopal 462066, Madhya Pradesh, India

prahlad@iiserb.ac.in