Added lemma nat_size[simp]: "size (n::nat) = n"
Added lemma nat_size[simp]: "size (n::nat) = n"

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle