Algorithmic
aspects of the Galois theory in recent times A
talk given at the Institut Henri Poincare on October 27, 2011 as part
of the conference
Bicentenaire de la naissance d’Evariste Galois. The slides can
be
found here. See
http://www.galois.ihp.fr/images_et_videos/videos-colloque/ for other
videos and links to this conference
Algebraic and Algorithmic Aspects of
Difference Equations. This is a
link to a web page where you can find lecture notes froma short course
I gave at a CIMPA conference in Santa Marta Columbia from July
23-27,
2012. There are further links to exercises and related papers.