Links

The Second European Set Theory Meeting: In honor of Ronald Jensen: Photographs


A booklet in German on infinity: Das Unendliche

It contains some relevant articles, e.g. by Patrick Dehornoy.

Also in Spanish: Ideas del infinito.


The famous battle between Hercules and the Hydra where infinite ordinals are used for proving termination of the battle. Resources on the web which might be of interest here:

http://cage.ugent.be/zwc/logan/BuchholzHydraApplet/

this is by Andreas Weiermann's student Frederik Meskens

http://math.andrej.com/2008/02/02/the-hydra-game/

this is by Andrej Bauer

http://www.few.vu.nl/~ariya/app/hydra/hydra.html

and this is by Ariya Ishihara.