Nous abordons la question de la persistance de la continuité Hölder pour les solutions faibles de lʼéquation linéaire de dérive-diffusion avec une pression non-locale sur , avec . On suppose que la vitesse de dérive b est au niveau critique de régularité par rapport au changement dʼéchelle de lʼéquation. La démonstration sʼappuie sur la définition des espaces Hölder de Campanato, et elle utilise un argument de principe du maximum par lequel nous contrôlons la croissance en temps de certaines moyennes locales de u. Nous fournissons une estimation qui ne dépend dʼaucune condition de petitesse locale sur le champ de vecteur b, mais seulement sur des quantités invariantes par changement dʼéchelle.
We address the persistence of Hölder continuity for weak solutions of the linear drift-diffusion equation with nonlocal pressure on , with . The drift velocity b is assumed to be at the critical regularity level, with respect to the natural scaling of the equations. The proof draws on Campanatoʼs characterization of Hölder spaces, and uses a maximum-principle-type argument by which we control the growth in time of certain local averages of u. We provide an estimate that does not depend on any local smallness condition on the vector field b, but only on scale invariant quantities.
@article{AIHPC_2012__29_4_637_0, author = {Silvestre, Luis and Vicol, Vlad}, title = {H\"older continuity for a drift-diffusion equation with pressure}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, volume = {29}, year = {2012}, pages = {637-652}, doi = {10.1016/j.anihpc.2012.02.003}, mrnumber = {2948291}, zbl = {1252.35102}, language = {en}, url = {http://dml.mathdoc.fr/item/AIHPC_2012__29_4_637_0} }
Silvestre, Luis; Vicol, Vlad. Hölder continuity for a drift-diffusion equation with pressure. Annales de l'I.H.P. Analyse non linéaire, Tome 29 (2012) pp. 637-652. doi : 10.1016/j.anihpc.2012.02.003. http://gdmltest.u-ga.fr/item/AIHPC_2012__29_4_637_0/
[1] Non-negative solutions of linear parabolic equations, Ann. Sc. Norm. Super. Pisa (3) 22 (1968), 607-694 | Numdam | MR 435594 | Zbl 0182.13802
,[2] Propietà di hölderianità di alcune classi di funzioni, Ann. Sc. Norm. Super. Pisa (3) 17 (1963), 175-188 | Numdam | MR 156188 | Zbl 0121.29201
,[3] Log improvement of the Prodi–Serrin criteria for Navier–Stokes equations, Methods Appl. Anal. 14 no. 2 (2007), 197-212 | MR 2437103 | Zbl 1198.35175
, ,[4] Diffusion processes and second order elliptic operators with singular coefficients for lower order terms, Math. Ann. 302 no. 2 (1995), 323-357 | MR 1336339 | Zbl 0876.35029
, ,[5] The regularity of weak solutions of the 3D Navier–Stokes equations in , Arch. Ration. Mech. Anal. 195 no. 1 (2010), 159-169 | MR 2564471 | Zbl 1186.35137
, ,[6] Regularity problem for the 3D Navier–Stokes equations: the use of Kolmogorovʼs dissipation range, arXiv:1102.1944v1 (2011) | Zbl 06304574
, ,[7] Global regularity for a modified critical dissipative quasi-geostrophic equation, Indiana Univ. Math. J. 57 no. 6 (2008), 2681-2692 | MR 2482996 | Zbl 1159.35059
, , ,[8] Sur le comportement global des solutions non-stationnaires des équations de Navier–Stokes en dimension 2, Rend. Sem. Mat. Univ. Padova 39 (1967), 1-34 | Numdam | MR 223716 | Zbl 0176.54103
, ,[9] Global well-posedness for an advection–diffusion equation arising in magneto-geostrophic dynamics, Ann. Inst. H. Poincaré Anal. Non Linéaire 28 no. 2 (2011), 283-301 | Numdam | MR 2784072 | Zbl 1277.35291
, ,[10] -solutions of Navier–Stokes equations and backward uniqueness, Uspekhi Mat. Nauk 58 no. 2(350) (2003), 3-44 | MR 1992563
, , ,[11] An alternative approach to regularity for the Navier–Stokes equations in critical spaces, Ann. Inst. H. Poincaré Anal. Non Linéaire 28 no. 2 (2011), 159-187 | MR 2784068 | Zbl 1220.35119
, ,[12] Regularity and blow up for active scalars, Math. Model. Nat. Phenom. 5 no. 4 (2010), 225-255 | MR 2662457 | Zbl 1194.35490
,[13] Global well-posedness for the critical 2D dissipative quasi-geostrophic equation, Invent. Math. 167 no. 3 (2007), 445-453 | MR 2276260 | Zbl 1121.35115
, , ,[14] Regularity for the Navier–Stokes equations with a solution in a Morrey space, Indiana Univ. Math. J. 57 no. 6 (2008), 2843-2860 | MR 2483004 | Zbl 1159.35056
,[15] Uniqueness and smoothness of generalized solutions of Navier–Stokes equations, Zap. Naučn. Sem. Leningrad. Otdel. Mat. Inst. Steklov. (LOMI) 5 (1967), 169-185 | MR 236541 | Zbl 0194.12805
,[16] Linear and Quasilinear Equations of Parabolic Type, Transl. Math. Monogr. vol. 23, Amer. Math. Soc., Providence, RI (1967)
, , ,[17] Extra regularity for parabolic equations with drift terms, Manuscripta Math. 113 no. 2 (2004), 191-209 | MR 2128546 | Zbl 1063.35045
, ,[18] On Harnackʼs theorem for elliptic differential equations, Comm. Pure Appl. Math. 14 (1961), 577-591 | MR 159138 | Zbl 0111.09302
,[19] The Harnack inequality and related properties of solutions of elliptic and parabolic equations with divergence-free lower-order coefficients, Algebra i Analiz 23 no. 1 (2011), 136-168 | MR 2760150
, ,[20] Un teorema di unicità per le equazioni di Navier–Stokes, Ann. Mat. Pura Appl. (4) 48 (1959), 173-182 | MR 126088 | Zbl 0148.08202
,[21] Regularity theorems for parabolic equations, J. Funct. Anal. 231 no. 2 (2006), 375-417 | MR 2195337 | Zbl 1090.35059
,[22] On divergence-free drifts, J. Differential Equations 252 no. 1 (2012), 505-540 | MR 2852216 | Zbl 1232.35027
, , , ,[23] On the interior regularity of weak solutions of the Navier–Stokes equations, Arch. Ration. Mech. Anal. 9 (1962), 187-195 | MR 136885 | Zbl 0106.18302
,[24] Theory of Function Spaces. II, Monogr. Math. vol. 84, Birkhäuser-Verlag, Basel (1992) | MR 1163193 | Zbl 0778.46022
,[25] Gaussian bounds for the fundamental solutions of , Manuscripta Math. 93 no. 3 (1997), 381-390 | MR 1457736
,[26] Local estimates on two linear parabolic equations with singular coefficients, Pacific J. Math. 223 no. 2 (2006), 367-396 | MR 2221033 | Zbl 1113.35041
,