Let α ∈ (0, 2) and let X be a Levy process where ´ b = σ = 0 in the Levy–Khintchine formula ´ and the Levy measure is    Show that if   then Y has the same law as X The process X is known as a...

Let α ∈ (0, 2) and let X be a Levy process where ´ b = σ = 0 in the Levy–Khintchine formula ´ and the Levy measure is
  Show that if
  then Y has the same law as X The process X is known as a symmetric stable process of index α.