Abstract
It is shown that, due to Rosenfeld's inequality relations, there is no possibility of defining states of the Friedmann universe in a physically sensible manner when the world radius becomes equal to or smaller than Planck's length.
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References
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v. Borzeszkowski, H.H., Treder, H.J. Planckions and the early stage of the universe. Found Phys 20, 241–250 (1990). https://doi.org/10.1007/BF00731648
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DOI: https://doi.org/10.1007/BF00731648