You might think that once a theorem has been proved that would be the end of it. I mean, is there possibly any value in having another proof of something? A new proof certainly doesn't make a theorem ...
https://doi.org/10.4169/college.math.j.48.1.51 • https://www.jstor.org/stable/10.4169/college.math.j.48.1.51 Copy URL By using the ellipse with foci at the extreme ...
Annals of Mathematics, Vol. 4, No. 1 (Oct., 1902), pp. 22-24 (3 pages) ...
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