[Analyse et problèmes de valeurs au bord dans les domaines singuliers : une approche via la géométrie bornée]
Nous montrons des résultats de solvabilité et de régularité pour des problèmes de valeurs au bord elliptiques dans certains domaines singuliers, conformément équivalents aux variétés avec bord et géométrie bornée. Nos hypothèses sont satisfaites par les domaines ayant un ensemble lisse de points cuspidaux singuliers, et nos résultats s'appliquent donc à la classe des domaines à singularités coniques oscillantes isolées. En particulier, ils généralisent le résultat classique de Kondratiev de solvabilité pour le laplacien sur les domaines à points coniques. Toutefois, nos domaines et coefficients sont trop généraux pour permettre de développer les solutions en fonctions singulières, comme avec la théorie de Kondratiev. Les démonstrations reposent sur des changements de métriques conformes, sur la géométrie des variétés à bord et géométrie bornée, ainsi que sur nos travaux antérieurs d'analyse et géométrie sur de telles variétés.
We prove well-posedness and regularity results for elliptic boundary value problems on certain singular domains that are conformally equivalent to manifolds with boundary and bounded geometry. Our assumptions are satisfied by the domains with a smooth set of singular cuspidal points, and hence our results apply to the class of domains with isolated oscillating conical singularities. In particular, our results generalize the classical -well-posedness result of Kondratiev for the Laplacian on domains with conical points. However, our domains and coefficients are too general to allow for singular function expansions of the solutions similar to the ones in Kondratiev's theory. The proofs are based on conformal changes of metric, on the differential geometry of manifolds with boundary and bounded geometry, and on our earlier geometric and analytic results on such manifolds.
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@article{CRMATH_2019__357_6_487_0,
author = {Bernd Ammann and Nadine Gro{\ss}e and Victor Nistor},
title = {Analysis and boundary value problems on singular domains: {An} approach via bounded geometry},
journal = {Comptes Rendus. Math\'ematique},
pages = {487--493},
publisher = {Elsevier},
volume = {357},
number = {6},
year = {2019},
doi = {10.1016/j.crma.2019.04.009},
language = {en},
}
TY - JOUR AU - Bernd Ammann AU - Nadine Große AU - Victor Nistor TI - Analysis and boundary value problems on singular domains: An approach via bounded geometry JO - Comptes Rendus. Mathématique PY - 2019 SP - 487 EP - 493 VL - 357 IS - 6 PB - Elsevier DO - 10.1016/j.crma.2019.04.009 LA - en ID - CRMATH_2019__357_6_487_0 ER -
%0 Journal Article %A Bernd Ammann %A Nadine Große %A Victor Nistor %T Analysis and boundary value problems on singular domains: An approach via bounded geometry %J Comptes Rendus. Mathématique %D 2019 %P 487-493 %V 357 %N 6 %I Elsevier %R 10.1016/j.crma.2019.04.009 %G en %F CRMATH_2019__357_6_487_0
Bernd Ammann; Nadine Große; Victor Nistor. Analysis and boundary value problems on singular domains: An approach via bounded geometry. Comptes Rendus. Mathématique, Volume 357 (2019) no. 6, pp. 487-493. doi : 10.1016/j.crma.2019.04.009. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2019.04.009/
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☆ B.A. and N.G. have been partially supported by SPP 2026 (Geometry at infinity), funded by the DFG. B.A. has also been partially supported by the DFG SFB 1085 (Higher Invariants). V.N. has been partially supported by ANR 14-CE25-0012-01 (SINGSTAR).
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