Abstract
We study nonlinear elliptic equations in divergence form
When \({\mathcal A}\) has linear growth in D u, and assuming that \(x\mapsto {\mathcal A}(x,\xi )\) enjoys \(B^{\alpha }_{\frac {n}\alpha , q}\) smoothness, local well-posedness is found in \(B^{\alpha }_{p,q}\) for certain values of \(p\in [2,\frac {n}{\alpha })\) and \(q\in [1,\infty ]\). In the particular case \({\mathcal A}(x,\xi )=A(x)\xi \), G = 0 and \(A\in B^{\alpha }_{\frac {n}\alpha ,q}\), \(1\leq q\leq \infty \), we obtain \(Du\in B^{\alpha }_{p,q}\) for each \(p<\frac {n}\alpha \). Our main tool in the proof is a more general result, that holds also if \({\mathcal A}\) has growth s−1 in D u, 2 ≤ s ≤ n, and asserts local well-posedness in L q for each q > s, provided that \(x\mapsto {\mathcal A}(x,\xi )\) satisfies a locally uniform VMO condition.
Similar content being viewed by others
References
Astala, K., Iwaniec, T., Saksman, E.: Beltrami operators in the plane. Duke Math. J. 107(1), 27–56 (2001)
Baison, A., Clop, A., Orobitg, J.: Beltrami equations with coefficient in the fractional sobolev space \(W^{\theta ,\frac {n}{\theta }}\), to appear at Proc. Amer. Math. Soc
Clop, A., Faraco, D., Mateu, J., Orobitg, J., Zhong, X.: Beltrami equations with coefficient in the Sobolev Space W 1,p. Publ. Mat. 53, 197–230 (2009)
Clop, A., Faraco, D., Ruiz, A.: Stability of calderón’s inverse conductivity problem in the plane for discontinuous conductivities. Inverse Problems and Imaging 4(1), 49–91 (2010)
Cruz, V., Mateu, J., Orobitg, J.: Beltrami equation with coefficient in Sobolev and Besov spaces. Canad. J. Math. 65, 1217–1235 (2013)
Giaquinta, M.: Multiple integrals in the calculus of variations and elliptic systems. Annals of Mathematics Studies, vol. 105. Princeton University Press, Princeton (1983)
Giova, R.: Higher differentiability for n-harmonic systems with Sobolev coefficients. J. Diff. Equations 259(11), 5667–5687 (2015)
Giusti, E.: Direct Methods in the Calculus of Variations. World Scientific Publishing Co (2003)
Grafakos, L.: Classical Fourier Analysis, 3rd edn. Graduate Texts in Mathematics, vol. 249. Springer, New York (2014)
Grafakos, L.: Modern Fourier Analysis, 3rd edn. Third Graduate Texts in Mathematics, vol. 250. Springer, New York (2014)
Haroske, D.: Envelopes and Sharp Embeddings of Function Spaces. Chapman and Hall CRC (2006)
Iwaniec, T.: L p-Theory of Quasiregular Mappings, Lecture Notes in Math, vol. 1508, pp. 39–64. Springer, Berlin (1992)
Iwaniec, T., Martin, G.: Geometric Function Theory and Nonlinear Analysis. Oxford Mathematical Monographs, NY (2001)
Iwaniec, T., Sbordone, C.: Riesz transforms and elliptic PDEs with VMO coefficients. J. Analyse Math. 74(1), 183–212 (1998)
Kinnunen, J., Zhou, S.: A local estimate for nonlinear equations with discontinuous coefficients. Comm. Part. Diff. Equ. 24, 2043–2068 (1999)
Kristensen, J., Melcher, C.: Regularity in oscillatory nonlinear elliptic systems. Math. Z. 260, 813–847 (2008)
Koskela, P., Yang, D., Zhou, Y.: Pointwise characterizations of Besov and Triebel- Lizorkin spaces and quasiconformal mappings. Adv. Math. 226(4), 3579–3621 (2011)
Kristensen, J., Mingione, G.: Boundary regularity in variational problems. Arch. Ration. Mech. Anal. 198(2), 369–455 (2010)
Kuusi, T., Mingione, G.: Universal potential estimates. J. Funct. Anal. 262(26), 4205–4269 (2012)
Kuusi, T., Mingione, G.: Guide to nonlinear potential estimates. Bull. Math. Sci. 4(1), 1–82 (2014)
Mingione, G.: The singular set of solutions to non-differentiable elliptic systems. Arch. Ration. Mech. Anal. 166(4), 287–301 (2003)
Passarelli di Napoli, A.: Higher differentiability of minimizers of variational integrals with Sobolev coefficients. Adv. Calc. Var. 7(1), 59–89 (2014)
Passarelli di Napoli, A.: Higher differentiability of solutions of elliptic systems with Sobolev coefficients: the case p = n = 2. Potential Analysis 41(3), 715–735 (2014)
Triebel, H.: Theory of Function Spaces. Monographs in Mathematics, vol. 78. Basel, Birkhauser (1983)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Baisón, A.L., Clop, A., Giova, R. et al. Fractional Differentiability for Solutions of Nonlinear Elliptic Equations. Potential Anal 46, 403–430 (2017). https://doi.org/10.1007/s11118-016-9585-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11118-016-9585-7
Keywords
- Nonlinear elliptic equations
- Local well-posedness
- Higher order fractional differentiability
- Besov spaces