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The Shortest Connector

How to Join Three 2-D Geometric Objects

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Abstract

We set out to find the shortest closed curve that connects three objects — each of which is a point, a line or a circle — on a plane. The solution is sometimes trivial, sometimes easy, sometimes hard and sometimes impossible. We hope readers will be inspired to provide alternative justifications/answers.

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Suggested Reading

  1. H. Dörrie, “The Tangency Problem of Apollonius,” §32 in 100 Great Problems of Elementary Mathematics: Their History and Solutions, New York: Dover. pp.154–160, 1965.

    Google Scholar 

  2. Thomas L. Heath, The Thirteen Books of Euclid’s Elements, Vol. 1–3 (2nd ed.), New York: Dover Publications, 1965.

    Google Scholar 

  3. F. Viète “Apollonius Gallus. Seu, Exsuscitata Apolloni Pergæi Πϵρι Επαϕων Geometria”, in Frans van Schooten (ed.) Francisci Vietae Opera mathematica (in Latin), ex officina B. et A. Elzeviriorum (Lugduni Batavorum) (published 1646). pp.325–346.

  4. C. B. Boyer, A History of Mathematics, New York: Wiley, p. 159, 1968.

    Google Scholar 

  5. R. Courant and H. Robbins, What Is Mathematics?: An Elementary Approach to Ideas and Methods, 2nd ed., Revised by Ian Stewart, Oxford, England: Oxford University Press, pp. 117, 125–127, 330–331, 346–352, 1996.

    Google Scholar 

  6. H. Dörrie, “Alhazen’s Billiard Problem,” §41 in 100 Great Problems of Elementary Mathematics: Their History and Solutions, New York: Dover, pp.197–200, 1965.

    Google Scholar 

  7. A. Mark Smith, ed. and trans, Alhacen on the Principles of Reflection: A Critical Edition, books 4 and 5 of Alhacen’s De Aspectibus, the Medieval Latin version of Ibn al-Haytham’s Kitāb al-Manāzir with English translation and commentary, Transactions of the American Philosophical Society, Philadelphia, 2006.

  8. J. M. Elkin, “A Deceptively Easy Problem,” Math. Teacher, 58, pp.194–199, 1965.

    Article  Google Scholar 

  9. H. Riede, “Reflexion am Kugelspiegel. Oder: das Problem des Alhazen,” Praxis Math., 31, pp.65–70, 1989.

    Google Scholar 

  10. P. M. Neumann, “Reflections on Reflection in a Spherical Mirror,” Amer. Math. Monthly 105, pp.523–528, 1998.

    Article  Google Scholar 

  11. Wikipedia, The Free Encyclopedia, Quartic function, https://en.wikipedia.org/wiki/Quartic-function.

  12. N. Hungerbühler, “Geometrical Aspects of the Circular Billiard,” Elem. Math. 47, pp.114–117, 1992.

    Google Scholar 

  13. H. Dörrie, “The Delian Cube-Doubling Problem,” §35 in 100 Great Problems of Elementary Mathematics: Their History and Solutions, New York: Dover, pp.170–172, 1965.

    Google Scholar 

  14. Nishimura, Yasuzo, “Solving Alhazen’s Problem by Origami,” International Journal of Geometry Vol.7 (2nd ed.), pp.37–42, 2018.

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Acknowledgement

We are thankful for available technology which enabled us to smoothly continue research collaboration in spite of mandatory physical distancing during the global pandemic.

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Correspondence to Jyotirmoy Sarkar or Collin Tully.

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Jyotirmoy Sarkar is a Professor working at Indiana University-Purdue University Indianapolis. His research areas include enumeration, probability, statistics, and reliability theory. He enjoys reading,’ riting,’ rithmetic and R-coding.

Collin Tully graduated from Purdue University majoring in computer science and mathematics. He enjoys finding new musicians to listen to, and has been studying functional analysis. He wishes to become a mathematician.

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Sarkar, J., Tully, C. The Shortest Connector. Reson 27, 1881–1901 (2022). https://doi.org/10.1007/s12045-022-1486-z

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