In this paper we continue the study in Lewis and Nyström (2010) [19], concerning the regularity of the free boundary in a general two-phase free boundary problem for the p-Laplace operator, by proving regularity of the free boundary assuming that the free boundary is close to a Lipschitz graph.
@article{AIHPC_2012__29_1_83_0, author = {Lewis, John L. and Nystr\"om, Kaj}, title = {Regularity of flat free boundaries in two-phase problems for the p-Laplace operator}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, volume = {29}, year = {2012}, pages = {83-108}, doi = {10.1016/j.anihpc.2011.09.002}, zbl = {1241.35221}, language = {en}, url = {http://dml.mathdoc.fr/item/AIHPC_2012__29_1_83_0} }
Lewis, John L.; Nyström, Kaj. Regularity of flat free boundaries in two-phase problems for the p-Laplace operator. Annales de l'I.H.P. Analyse non linéaire, Tome 29 (2012) pp. 83-108. doi : 10.1016/j.anihpc.2011.09.002. http://gdmltest.u-ga.fr/item/AIHPC_2012__29_1_83_0/
[1] A Harnack inequality approach to the regularity of free boundaries. Part I, Lipschitz free boundaries are , Rev. Mat. Iberoam. 3 (1987), 139-162 | Zbl 0676.35085
,[2] A Harnack inequality approach to the regularity of free boundaries. II. Flat free boundaries are Lipschitz, Comm. Pure Appl. Math. 42 no. 1 (1989), 55-78 | Zbl 0676.35086
,[3] A Harnack inequality approach to the regularity of free boundaries. III. Existence theory, compactness, and dependence on X, Ann. Sc. Norm. Super. Pisa Cl. Sci. (4) 15 no. 4 (1988), 583-602 | Numdam | Zbl 0702.35249
,[4] Fully Non-linear Elliptic Equations, American Mathematical Society Colloquium Publications vol. 43, Amer. Math. Soc., Providence, RI (1995) | Zbl 0834.35002
, ,[5] Boundary behavior of nonnegative solutions of elliptic operators in divergence form, Indiana Univ. Math. J. 30 no. 4 (1981), 621-640 | Zbl 0512.35038
, , , ,[6] Two-phase problems for linear elliptic operators with variable coefficients: Lipschitz free boundaries are , Arch. Ration. Mech. Anal. 171 (2004), 329-448 | Zbl 1106.35144
, , ,[7] Regularity for two non-isotropic two phase problems with Lipschitz free boundaries, Differential Integral Equations 10 (1997), 227-251 | Zbl 0940.35047
,[8] Regularity of Lipschitz free boundaries in two-phase problems for fully non-linear elliptic equations, Indiana Univ. Math. J. 50 no. 3 (2001), 1171-1200 | Zbl 1037.35104
,[9] Two-phase problems for a class of fully non-linear elliptic operators, Lipschitz free boundaries are , Amer. J. Math. 128 no. 3 (2006), 541-571 | Zbl 1142.35108
,[10] Regularity of the free boundary in two-phase problems for linear elliptic operators, Adv. Math. 214 (2007), 288-322 | Zbl 1189.35385
, ,[11] F. Ferrari, S. Salsa, Subsolutions of elliptic operators in divergence form and applications to two-phase free boundary problems, Bound. Value Probl. (2007), Art. ID 57049, 21 pp.
[12] On the behavior of the solutions of a quasilinear equation near null salient points of the boundary, Proc. Steklov Inst. Math. 125 (1973), 130-136
,[13] Boundary regularity for solutions of degenerate elliptic equations, Nonlinear Anal. 12 no. 11 (1988), 1203-1219 | Zbl 0675.35042
,[14] Boundary behaviour for p-harmonic functions in Lipschitz and starlike Lipschitz ring domains, Ann. Sc. École Norm. Sup. (4) 40 no. 4 (2007), 765-813 | Numdam | Zbl 1134.31008
, ,[15] Boundary behaviour and the Martin boundary problem for p-harmonic functions in Lipschitz domains, Ann. of Math. 172 (2010), 1907-1948 | Zbl 1210.31004
, ,[16] Regularity and free boundary regularity for the p-Laplacian in Lipschitz and -domains, Ann. Acad. Sci. Fenn. 33 (2008), 523-548 | Zbl 1202.35110
, ,[17] New results on p-harmonic functions, Pure Appl. Math. Q. 7 no. 7 (2011), 345-363 | Zbl 1241.35110
, ,[18] Boundary behaviour of p-harmonic functions in domains beyond Lipschitz domains, Adv. Calculus Variations 1 (2008), 133-170 | Zbl 1169.31004
, ,[19] Regularity of Lipschitz free boundaries in two-phase problems for the p-Laplace operator, Adv. Math. 225 (2010), 2565-2597 | Zbl 1200.35335
, ,[20] Boundary Harnack inequalities for operators of p Laplace type in Reifenberg flat domains, , (ed.)Proceedings of Symposia in Pure Mathematics vol. 79 (2008), 229-266 | Zbl 1160.35423
, , ,[21] Regular points for elliptic equations with discontinuous coefficients, Ann. Sc. Norm. Super. Pisa (3) 17 (1963), 43-77 | Numdam | Zbl 0116.30302
, , ,[22] Regularity of free boundaries of two-phase problems for fully non-linear elliptic equations of second order. Part 1: Lipschitz free boundaries are , Comm. Pure Appl. Math. 53 no. 7 (2000), 799-810 | Zbl 1040.35158
,[23] Regularity of free boundaries of two-phase problems for fully non-linear elliptic equations of second order. II: Flat free boundaries are Lipschitz, Comm. Partial Differential Equations 27 no. 7–8 (2002), 1497-1514 | Zbl 1125.35424
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