For fragmentations in which particles split even faster when their mass is smaller, it is possible to observe a decrease of the total mass of the system, due to the reduction into dust. We investigate here this appearance of dust for a large class of deterministic and random fragmentations.
"Apearance of Dust in Fragmentations." Commun. Math. Sci. 2 (S1) 65 - 73, May, 2004.