\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{\(Pseudo\)-involutions}{}% 2
\BOOKMARK [1][-]{section.3}{Relationship with B-sequences}{}% 3
\BOOKMARK [1][-]{section.4}{Applications}{}% 4
\BOOKMARK [1][-]{section.5}{Acknowledgments}{}% 5