cardinal_UN_Ord_lt_csucc: added comment
le_UN_Ord_lt_csucc: tided proof by proving the lemma
inj_UN_subset
#! /bin/sh
#rm-logfiles: remove useless files from subdirectories
rm log */make*.log */make*.log.gz
rm */test
find . -name '.*.thy.ML' -print -exec rm {} \;