: 1 = 2 1 = 1 + 1 + 2 1 = 2 + 2 1 = 2 . . + 1 + 2 1 = 2 . . + 1/2 .. + 1/2 .. 1 = 2 . . + 1/4 .. p p
:
1 = 1 .. p p + 2 ..
1 = 1 ,