Invited Lecturer

• Escuela Colombiana de Física Teórica y Matemática
  Medellín, August 1998
  D-branes and gauge field theories
• 19th UK Summer Institute in Theoretical High-Energy Physics
  Oxford, August-September 1998
  The geometry of branes
• BUSSTEPP 2000
  Oxford, September 2000
  Supersymmetry
• BUSSTEPP 2001
  Manchester, August-September 2001
  Supersymmetry
• Supercordas do Noroeste
  Oviedo, February 2004
  Quotienting string backgrounds
• Winter School on Gauge Theory
  Göttingen, December 2006
  Higher-dimensional gauge theory