(abstract 2017) Stratified regularity and 3D Euler equation at large time Abstract — We solve the Euler equation 1/ in all dimension at small time, for data with stratified regularity, D2Δ-1 conserving this type of regularity (: only an announcement of a part of our Ch4B, thesis, 92, univ Paris 6-PMC, France, see also below) and 2/ we give an almost (ie except only on a simple estimate on a regularization of the initial axi-data and classical maths on euler eqs) self contained proof, with no paradifferential-calculus, at large time in the 3D axiymmetrical case (and newly without condition of sign linked to the curl), firstly for general under-lipchitz speeds secondly in the vortex patches 3d frame (VP3 :ie local C1+s(R3) deformations of L°°(R,C1+s(R2))), precising fully and newly in this last case, the matricial discontinuous part of the gradient of the speed. our here well existing under-lipchitz axi3d solutions are, by our other "Pertes de régularité pour le laplacien et l'équation d'Euler sur Rn", lagrangian C°° in time. Ch4B is refined, reworked, extended and included in results of the paper = ""Vortex patches dans Rn et régularité stratifiée pour le laplacien"" (but ch4B has still a remaining interest on small differences in some approaches). ---- our axi part here, in particular, on the novelty of the absence of condition of sign linked to the curl is +- "similar, simultaneous and independent" (at least for me), to Saint Raymond, X. (1994). Remarks on axisymmetric solutions of the incompressible Euler system. Communications in partial differential equations, 19(1-2), 321-334, this one extending and completing the other paper on its axi-part with the condition of sign linked to the curl = Gamblin, P., & Saint Raymond, X. (1995). On three-dimensional vortex patches. Bulletin de la Société Mathématique de France, 123(3), 375-424. ------- 15 to 25 citations (with google (scholar) and me). GS14, ap17.
https://www.researchgate.net/publication/266432609_Regularite_stratifiee_et_equation_d%27Euler_3d_a_temps_grand?_iepl%5BviewId%5D=MxK1034nfk3sbQgOOKv1kvlL&_iepl%5BprofilePublicationItemVariant%5D=default&_iepl%5Bcontexts%5D%5B0%5D=prfpi&_iepl%5BinteractionType%5D=publicationTitle
Article Régularité stratifiée et équation d'Euler 3d à temps grand