- Cosmin Pohoata, A note on the anticomplements of the Fermat points, Forum Geometricorum 9 (2009) 119-123. (Link to the paper’s abstract)
We show that each of the anticomplements of the Fermat points is common to a triad of circles involving the triangle of reflection. We also generate two new triangle centers as common points to two other triads of circles. Finally, we present several circles passing through these new centers and the anticomplements of the Fermat points.
- Andrei Frimu, Yimin Ge, Daniel Kohen, David Kotik, Hojoo Lee, Soo-Hong Lee, Cosmin Pohoata, Ho Chung Siu, Peter Vandendriessche, Ofir Gorodetsk, Alexander Remorov, Darij Grinberg, Harun Siljak, Marin Misur, Problems in Elementary Number Theory 2 (Spring 2009) (43 pages; link to the PDF file).
In this volume, you will meet the solutions of the problems from the second season of the PEN biweek project. Additional details about this project can be read from http://projectpen.wordpress.com/.
