Using LEGO to formalise proof-theoretic symmetry arguments
I have implementated some work in LEGO that has helped me to
formulate symmetry and other arguments as correspondences
between proof search spaces viewed as kripke structures.
Modal mu-calculus provides a suitable language for
describing a range of properties that are preserved within
search spaces by various transformations and quotient
operations. I have implemented the all various structures
and logics in LEGO and will motivate and discuss the derived
theorems using a simple object-level proof system (also in
LEGO) as an example.
Last modified: Mon Jul 14 16:24:00 BST 1997