TY - JOUR T1 - Geometric Estimates of the First Eigenvalue of $(p,q)$-Elliptic Quasilinear System Under Integral Curvature Condition AU - Habibi Vosta Kolaei , Mohammad Javad AU - Azami , Shahroud JO - Journal of Partial Differential Equations VL - 4 SP - 348 EP - 368 PY - 2021 DA - 2021/08 SN - 34 DO - http://doi.org/10.4208/jpde.v34.n4.3 UR - https://global-sci.org/intro/article_detail/jpde/19403.html KW - Eigenvalue, $(p,q)$-elliptic quasilinear system, geometric estimate, integral curvature. AB -

Consider (M,g) as a complete, simply connected Riemannian manifold. The aim of this paper is to provide various geometric estimates in different cases for the first eigenvalue of $(p,q)$-elliptic quasilinear system in both Dirichlet and Neumann conditions on Riemannian manifold. In some cases we add integral curvature condition and maybe we prove some theorems under other conditions.