Abstract :
The equation x0 t.qv 2x t.sbx wty1x., where w?x designates the greatest
integer function, can be described in brief by two amazing properties. First, for
certain values of the coefficients, some or all of its solutions are monotone
although the corresponding homogeneous equation is clearly oscillatory. Second,
for a specific relation between v and b, there exist periodic solutions with
different periods
