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Existence of critical points for noncoercive functionals with critical Sobolev exponent
Applicable Analysis ( IF 1.1 ) Pub Date : 2021-02-23 , DOI: 10.1080/00036811.2021.1892078
Zhouxin Li 1 , Xiang Yuan 1 , Qi Zhang 1
Affiliation  

We consider the following noncoercive functional with the critical Sobolev exponent I(u)=12Ω1(1+|u|)2α|u|2dxλqΩ|u|qdx12(1α)Ω|u|2(1α)dx,where λ>0, 0<α<(N+2)/2N, 2<q<2(1α), 2=2N/(N2). We prove the existence of a nontrivial critical point via the mountain pass theorem and the multiplicity via Clark's theorem.



中文翻译:

具有临界 Sobolev 指数的非强制泛函临界点的存在

我们考虑以下具有关键 Sobolev 指数的非强制泛函()=12Ω1(1+||)2α||2dX-λqΩ||qdX-12*(1-α)Ω||2*(1-α)dX,在哪里λ>0,0<α<(ñ+2)/2ñ,2<q<2*(1-α),2*=2ñ/(ñ-2). 我们通过山口定理证明了非平凡临界点的存在,并通过克拉克定理证明了多重性。

更新日期:2021-02-23
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