Abstract
IN my “Theories of Parallelism” I expressed my sense of failure in controverting Bertrand's simple proof (by the consideration of infinite sectors and infinite strips) of Euclid's parallel axiom. This sense of failure has only increased since the publication of my little book.
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FRANKLAND, W. Non-Euclidean Geometry. Nature 87, 315 (1911). https://doi.org/10.1038/087315b0
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DOI: https://doi.org/10.1038/087315b0
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