Geodesic
Remarks on vacuum state and uniqueness of concentration process
Electronic journal of differential equations, Tome 2008 (2008)
We give two examples of nonuniqueness of generalized solutions of pressureless gas dynamics systems. In both of these examples, the presence of the Dirac delta-function leads to nonuniqueness.
Classification : 35L65, 35L67
Keywords: zero-pressure gas dynamics system, vacuum state, delta-shock solution 
@article{EJDE_2008__2008__a23,
     author = {Danilov,  Vladimir G.},
     title = {Remarks on vacuum state and uniqueness of concentration process},
     journal = {Electronic journal of differential equations},
     year = {2008},
     volume = {2008},
     zbl = {1170.35479},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a23/}
}
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Danilov,  Vladimir G. Remarks on vacuum state and uniqueness of concentration process. Electronic journal of differential equations, Tome 2008 (2008). http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a23/