Abstract
The region where the equation deteriorates is fixed for linear and semilinear degenerate equations. The cases usually discussed are that the degenerate region is on the boundary. The two approaches are often used. One is the barrier argument and another is introducing the weighted Sobolev spaces.
1991 Mathematics Subject Classification: 35J70, 35K65, 35J25, 35J65, 35J60, 35K20, 35K15, 35K20, 35K55, 35K60, 35B65
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Chen, Y. (1994). Degenerate Parabolic and Elliptic Equations. In: Gu, C., Ding, X., Yang, CC. (eds) Partial Differential Equations in China. Mathematics and Its Applications, vol 288. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1198-0_1
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