You are correct. Kalman apologizes, but then goes on to call it the Marden theorem anyway! At 08:17 PM 11/17/2010, Dan Asimov wrote:

It seems that Dan Kalman called it the Marden theorem solely because he read about it in a book by Marden, even though Marden attributes the theorem to Siebeck. I would call it the Siebeck theorem.

--Dan

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