Geodesic
Regularity of the interface for the porous medium equation
Electronic journal of differential equations, Tome 2000 (2000)
We establish the interface equation and prove the $C^{\infty}$ regularity of the interface for the porous medium equation whose solution is radial symmetry.
Classification : 35K65
Keywords: porous medium, radial symmetry, interface, C-infinity regularity 
@article{EJDE_2000__2000__a68,
     author = {Ko,  Youngsang},
     title = {Regularity of the interface for the porous medium equation},
     journal = {Electronic journal of differential equations},
     year = {2000},
     volume = {2000},
     zbl = {0962.35105},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a68/}
}
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%J Electronic journal of differential equations
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Ko,  Youngsang. Regularity of the interface for the porous medium equation. Electronic journal of differential equations, Tome 2000 (2000). http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a68/