Pedro Freitas

Research interests

• Recreational mathematics;
• History of mathematics;
• Mathematics and art.

Publications (selection)

1. Simão Palmeirim Costa e Pedro J Freitas, Livro de Problemas de Almada Negreiros, Ed Sociedade Portuguesa de Matemática, 2015
2. Pedro J Freitas, "Almada Negreiros and the regular nonagon", Recreational Mathematics Magazine (March 2015).
3. Simão Palmeirim Costa e Pedro J Freitas, "Almada Negreiros and the Geometric Canon", Journal of Mathematics and the Arts, vol 9 nos. 1-2 (2015).
4. Sónia Carvalho and Pedro J Freitas, "On Derivatives and Norms of Generalized Matrix Functions and Symmetric Powers", Electronic Journal of Linear Algebra, vol. 30 (2015).
5. Carlos A M André, Pedro J Freitas e Ana Margarida Neto, "A Supercharacter Theory for Involutive Algebra Groups", Journal of Algebra, Volume 430, Pages 159–190 (2015).