An Elementary Proof of Marden's Theorem

  title={An Elementary Proof of Marden's Theorem},
  author={Dan Kalman},
  journal={The American Mathematical Monthly},
  pages={330 - 338}
  • D. Kalman
  • Published 1 April 2008
  • Mathematics, Computer Science
  • The American Mathematical Monthly
I call this Marden’s Theorem because I first read it in M. Marden’s wonderful book [6]. But this material appeared previously in Marden’s earlier paper [5]. In both sources Marden attributes the theorem to Siebeck, citing a paper from 1864 [8]. Indeed, Marden reports appearances of various versions of the theorem in nine papers spanning the period from 1864 to 1928. Of particular interest in what follows below is an 1892 paper by Maxime Bocher [1]. In his presentation Marden states the theorem… Expand
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Geometry of Polynomials, Math. Surveys no
  • Geometry of Polynomials, Math. Surveys no
  • 1966
and R
  • F. Davis, Geometrical Conics, MacMillan, New York,
  • 1894
Ueber eine neue analytische Behandlungweise der Brennpunkte
  • J. Reine Angew. Math
  • 1864