Abstract
Hans Scheerer proved that if two simply connected compact Lie groups are homotopically equivalent, then the groups are isomorphic. We give a conceptually simpler proof which shows that the result depends only on the 2 and 3 primary homotopy of the Lie groups.
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Hubbuck, J.R., Kane, R.M. The homotopy types of compact lie groups. Israel J. Math. 51, 20–26 (1985). https://doi.org/10.1007/BF02772955
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DOI: https://doi.org/10.1007/BF02772955