Abstract
We prove Harnack inequality and regularity for solutions of a linear strongly degenerate elliptic equation. We assume the lower order terms in Stummel–Kato classes with respect to the Carnot–Carathéodory metric. We follow the pattern by Serrin in Acta Math 111:247–302, (1964).
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Aizenman M., Simon B.: Brownian motion and Harnack’s inequality for Schrdinger operators. Commun. Pure Appl. Math. 35, 209–271 (1982)
Buckley S.M.: Inequalities of John-Nirenberg type in doubling spaces. J. Anal. Math. 79, 215–240 (1999)
Chiarenza F., Fabes E., Garofalo N.: Harnack’s inequality for Schrödinger operators and the continuity of solutions. Proc. Am. Math. Soc. 98(3), 415–425 (1986)
Citti G., Di Fazio G.: Hölder continuity of the solutions for operators which are a sum of squares of vector fields plus a potential. Proc. Am. Math. Soc. 122, 741–750 (1994)
Citti G., Garofalo N., Lanconelli E.: Harnack’s inequality for sum of squares of vector fields plus a potential. Am. J. Math. 115, 699–734 (1994)
Di Fazio G.: Hölder-continuity of solutions for some Schrödinger equations. Rend. Semin. Mat. Univ. Padova 79, 173–183 (1988)
Di Fazio G.: Poisson equation in Morrey spaces. J. Math. Anal. Appl. 163, 157–167 (1992)
Di Fazio G.: Dirichlet problem characterization of regularity. Manuscr. Math. 84, 47–56 (1994)
Di Fazio G., Zamboni P.: Hölder continuity for quasilinear subelliptic equations in Carnot Carath认ory spaces. Math. Nachr. 272, 3–10 (2004)
Di Fazio G., Zamboni P.: Local regularity of solutions to quasilinear subelliptic equations in Carnot Carathéodory spaces. Boll. Unione Mat. Ital. (8) 9B(2), 485–504 (2006)
Di Fazio G., Fanciullo M.S., Zamboni P.: Harnack inequality and smoothness for quasilinear degenerate elliptic equations. J. Differ. Equ. 245(10), 2939–2957 (2008)
Fabes E., Kenig C., Serapioni R.: The local regularity of solutions of degenerate elliptic equations. Commun. Partial Differ. Equ. 7(1), 77–116 (1982)
Gutierrez C.E.: Harnack’s inequality for degenerate Schrödinger operators. Trans. AMS 312, 403–419 (1989)
Kurata K.: Continuity and Harnack’s inequality for solutions of elliptic partial differential equations of second order. Indiana Univ. Math. J. 43(2), 411–440 (1994)
Lu G.: Weighted Poincaré and Sobolev inequality for vector fields satisfying Hörmander’s condition and its application. Rev. Iberoam. 8(3), 367–439 (1992)
Lu G.: On Harnack’s inequality for a class of strongly degenerate Schrödinger operators formed by vector fields. Differ. Integral Equ. 7(1), 73–100 (1994)
Mohammed A.: Hölder continuity of solutions of some degenerate elliptic differential equations. Bull. Austral. Math. Soc. 62, 369–377 (2000)
Nagel A., Stein E.M., Wainger S.: Balls and metrics defined by vector fields. I. Basic properties. Acta Math. 155(1–2), 103–147 (1985)
Rakotoson J.M., Ziemer W.P.: Local behavior of solutions of quasilinear elliptic equations with general structure. Trans. Am. Math. Soc. 319(2), 747–764 (1990)
Serrin J.: Local behaviour of solutions of quasilinear equations. Acta Math. 111, 247–302 (1964)
Simader C.G.: An elementary proof of Harnack’s inequality for Schrödinger operators and related topics. Math. Z. 203(1), 129–152 (1990)
Vitanza C., Zamboni P.: Necessary and sufficient conditions for Hölder continuity of solutions of degenerate Schrdinger operators. Le Mat. 52(2), 393–409 (1997)
Zamboni P.: Local boundedness of solutions of quasilinear elliptic equations with coefficients in Morrey spaces. Boll. Unione Mat. Ital. (7) 8B(4), 985–997 (1994)
Zamboni P.: Local behavior of solutions of quasilinear elliptic equations with coefficients in Morrey spaces. Rend. Mat. Appl. (7) 15(2), 251–262 (1995)
Zamboni P.: The Harnack inequality for quasilinear elliptic equations under minimal assumptions. Manuscr. Math. 102(3), 311–323 (2000)
Zamboni P.: Hölder continuity for solutions of linear degenerate elliptic equations under minimal assumptions. J. Differ. Equ. 182(1), 121–140 (2002)
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Di Fazio, G., Fanciullo, M.S. & Zamboni, P. Harnack inequality for a class of strongly degenerate elliptic operators formed by Hörmander vector fields. manuscripta math. 135, 361–380 (2011). https://doi.org/10.1007/s00229-010-0420-y
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DOI: https://doi.org/10.1007/s00229-010-0420-y