Professor at the Mathematics Department of the Faculty of Science of the University of Lisbon.

Member of the Group of Mathematical Physics of the University of Lisbon.

• Paper "Periodical plane puzzles with numbers" [PDF]
• Paper "Jogos com poliedros e permutações" [PDF]
  -- published in Boletim da SPM (43), October 2000.
• Paper "Sobre os puzzles com poliedros e números" [PDF]
    english version: "On the Puzzles with polyhedra and numbers" [PDF]
  
• Paper "Puzzles with polyhedra and permutation groups" [PDF]
  
• Paper "Three puzzles with polyhedra and numbers" [PDF]
  1. Rhombic dodecahedron
  2. Deltoidal icositetrahedron
  3. Plates for the deltoidal icositetrahedron
  4. Rhombicuboctahedron
  5. Plates for the rhombicuboctahedron
• More puzzles [PDF]:
  1. Icosahedron (4) puzzle
  2. Cube and octahedron
  3. Icosahedron
  4. Dodecahedron
  5. Cuboctahedron
  6. Loja SPM
• Paper "Polyhedron puzzles and groups" [PDF]
• Photos of polyhedron puzzles
• Polyhedra and numbers
• Home page at ludicum.org
• Polýedros
• Paper "The Sturm-Liouville problem and the Polar Representation Theorem"
• Paper "Period and energy in one degree of freedom systems" [PDF]
• Ruy Luís Gomes Centenary

Scientific interests

• Feynman path integrals
• Stationary phase method
• Semi-classical aproximation in quantum mechanics
• Schrödinger operators
• Borel summability