Reginald De Koven[?]
Rudolf Friml[?]
Victor Herbert
Emmerich Kalman[?], also known as Imre Kálmán
Franz Lehar
Jacques Offenbach
Sigmund Romberg[?]
Johann Strauss II
Arthur S. Sullivan (of Gilbert and Sullivan)
... there is a repeated solution x, and this solution is real. (Geometrically, this means that the parabola described by the quadratic equation touches the x-axis in a single ...