Hi.
I have a problem with the following problem

We have a wiener proces (Wt)t>0 with parameter 2.
Show that for every a > 0 (paWt=a)t>0 and (DaWt)t>0 is also a wiener proces with parameter 2.

Show that ( ~Wt)t0 og (Wt)t0 is versions where
W0 = 0 and Wt = tW1=t for t > 0.

Should I use the structur of the covirians?

Thank you.