Abstract
A recent criticism of the claimed existence of torsion-free connections compatible with a hypermanifold structure in Finkelstein's sense is reinforced by relating the problem to the space problem of Weyl as generalized by Cartan and Freudenthal. Some historical remarks concerning the development of the latter are also included.
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Urbantke, H. Hyperspin manifolds and the space problem of Weyl. Int J Theor Phys 28, 1233–1235 (1989). https://doi.org/10.1007/BF00669345
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DOI: https://doi.org/10.1007/BF00669345