Relacionar matematicas de conjuntos con patrones de regex
Math Pattern Pattern meaning no equivalent no character at all matches “” c c matches “c” p1p2 matches p1 then p2 p1|p2 matches p1 or p2 p* matches “” or p repeated p+ matches p repeated, but not “” p? matches p or “” p{n} matches p repeated n times p{n,m} matches p repeated n [...]