BPL = L ?



Hi,

I am stuck with the following problem, can someone help me? Thanks!

If there is a pseudo-random generator G: {0,1}^O(log n) -> {0, 1}^O(n^k) (k
is a natural number) for log(n) space-bounded probabilistic machines so that
G is computable in space linear in the input, then BPL = L. How to prove
this?


.