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Journal Article K -THEORY AND REALITY Get access M. F. ATIYAH M. F. ATIYAH Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Mathematics, Volume 17, Issue 1, 1966, Pages 367–386, https://doi.org/10.1093/qmath/17.1.367 Published: 01 January 1966 Article history Published: 01 January 1966 Received: 09 August 1966
Michael Atiyah (Sat,) studied this question.