\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{Preliminary Lemmas for Theorem 1}{}% 2
\BOOKMARK [1][-]{section.3}{Proof of Theorem 1}{}% 3
\BOOKMARK [1][-]{section.4}{Proof of Theorem 2}{}% 4
\BOOKMARK [1][-]{section.5}{Examples}{}% 5
\BOOKMARK [1][-]{section.6}{Further Generalizations}{}% 6
\BOOKMARK [1][-]{section.7}{Open Questions}{}% 7