author | wenzelm |
Tue, 09 May 2000 16:05:30 +0200 | |
changeset 8846 | c7d945398677 |
parent 8751 | 9ed0548177fb |
child 9458 | c613cd06d5cf |
permissions | -rw-r--r-- |
lemma app_Nil2 [simp]: "xs @ [] = xs"; apply(induct_tac xs); apply(auto);.; lemma app_assoc [simp]: "(xs @ ys) @ zs = xs @ (ys @ zs)"; apply(induct_tac xs); apply(auto);.; lemma rev_app [simp]: "rev(xs @ ys) = (rev ys) @ (rev xs)"; apply(induct_tac xs); apply(auto);.; theorem rev_rev [simp]: "rev(rev xs) = xs"; apply(induct_tac xs); apply(auto);.; end;