Geodesic
Homographic Approximation for Some Nonlinear Parabolic Unilateral Problems
Journal of convex analysis, Tome 7 (2000) no. 2, pp. 353-374 Cet article a éte moissonné depuis la source Heldermann Verlag

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We deal with nonlinear parabolic unilateral problems by means of the homographic approximation, introduced by C. M. Brauner and B. Nicolaenko [in: "Nonlinear Partial Diff. Equations and Their Applications", H. Brezis, J. L. Lions (eds.), Research Notes in Mathematics 70 (1982) 86--128] in the linear elliptic case. The interest in this kind of penalty method arises from the fact that, in contrast with the usual penalization the homographic approximation is a "bounded penalty", which turns out to be convenient to have a priori estimates on the approximate solutions. 
@article{JCA_2000_7_2_JCA_2000_7_2_a6,
     author = {M. C. Palmeri},
     title = {Homographic {Approximation} for {Some} {Nonlinear} {Parabolic} {Unilateral} {Problems}},
     journal = {Journal of convex analysis},
     pages = {353--374},
     year = {2000},
     volume = {7},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2000_7_2_JCA_2000_7_2_a6/}
}
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M. C. Palmeri. Homographic Approximation for Some Nonlinear Parabolic Unilateral Problems. Journal of convex analysis, Tome 7 (2000) no. 2, pp. 353-374. http://geodesic.mathdoc.fr/item/JCA_2000_7_2_JCA_2000_7_2_a6/