  The Degasperis-Procesi equation possesses well-known peaked solitary waves
that are called peakons. Their stability has been established by Lin and Liu in
[5]. In this paper, we localize the proof (in some suitable sense detailed in
Section 3) of the stability of a single peakon. Thanks to this, we extend the
result of stability to the sum of N peakons traveling to the right with
respective speeds c1, . . . , cN , such that the difference between consecutive
locations of peakons is large enough.
