doc-src/TutorialI/pghead.pdf
author krauss
Wed, 06 Feb 2008 16:06:40 +0100
changeset 26044 32889481ec4c
parent 16383 7dd0eb6e89f9
permissions -rw-r--r--
lemma wf_union_compatible: "wf R ==> wf S ==> S O R <= R ==> wf (R Un S)"

(binary:application/pdf)