The course presents a rigorous treatment of the foundations of Euclidean and non-Euclidean geometries. The discovery of non-Euclidean geometry in the first half of the 19th century shattered the ...
https://doi.org/10.5951/mathteacher.105.6.0474 • https://www.jstor.org/stable/10.5951/mathteacher.105.6.0474 Copy URL ...
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