<p>We are concerned with the problem with Minkowski-curvature operator on an exterior domain <Equation ID="Equ16"> <EquationSource Format="TEX">\( \left\{ \begin{array}{ll} -\textrm{div}\Big (\phi _{N}(\nabla u(x))\Big )=\lambda a(|x|)f(u(x)),~~~\textrm{in}~B^{c},\\ \frac{\partial u}{\partial n}\mid _{\partial B^{c}}=0,~~\lim \limits _{|x|\rightarrow \infty }u(x)=0, \end{array} \right. \)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mfenced open="{"> <mrow> <mtable> <mtr> <mtd columnalign="left"> <mrow> <mo>-</mo> <mtext>div</mtext> <mrow> <mo maxsize="1.623em" minsize="1.623em" stretchy="true">(</mo> </mrow> <msub> <mi>ϕ</mi> <mi>N</mi> </msub> <mrow> <mo stretchy="false">(</mo> <mi mathvariant="normal">∇</mi> <mi>u</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> <mrow> <mo maxsize="1.623em" minsize="1.623em" stretchy="true">)</mo> </mrow> <mo>=</mo> <mi>λ</mi> <mi>a</mi> <mrow> <mo stretchy="false">(</mo> <mo stretchy="false">|</mo> <mi>x</mi> <mo stretchy="false">|</mo> <mo stretchy="false">)</mo> </mrow> <mi>f</mi> <mrow> <mo stretchy="false">(</mo> <mi>u</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> <mo>,</mo> <mspace width="3.33333pt" /> <mspace width="3.33333pt" /> <mspace width="3.33333pt" /> <mtext>in</mtext> <mspace width="3.33333pt" /> <msup> <mi>B</mi> <mi>c</mi> </msup> <mo>,</mo> </mrow> </mtd> </mtr> <mtr> <mtd columnalign="left"> <mrow> <mrow /> <mfrac> <mrow> <mi>∂</mi> <mi>u</mi> </mrow> <mrow> <mi>∂</mi> <mi>n</mi> </mrow> </mfrac> <msub> <mo>∣</mo> <mrow> <mi>∂</mi> <msup> <mi>B</mi> <mi>c</mi> </msup> </mrow> </msub> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mspace width="3.33333pt" /> <mspace width="3.33333pt" /> <munder> <mo movablelimits="false">lim</mo> <mrow> <mo stretchy="false">|</mo> <mi>x</mi> <mo stretchy="false">|</mo> <mo stretchy="false">→</mo> <mi>∞</mi> </mrow> </munder> <mi>u</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo>=</mo> <mn>0</mn> <mo>,</mo> </mrow> </mtd> </mtr> </mtable> </mrow> </mfenced> </math></EquationSource> </Equation>where <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\frac{\partial u}{\partial n}\)</EquationSource> <EquationSource Format="MATHML"><math> <mfrac> <mrow> <mi>∂</mi> <mi>u</mi> </mrow> <mrow> <mi>∂</mi> <mi>n</mi> </mrow> </mfrac> </math></EquationSource> </InlineEquation> denotes the outward normal derivative of <i>u</i>, <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\phi _{N}(y)=\frac{y}{\sqrt{1-|y|^{2}}},~y\in \mathbb {R}^{N},~B^{c}=\{x\in \mathbb {R}^{N}:|x|&gt;R\}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>ϕ</mi> <mi>N</mi> </msub> <mrow> <mo stretchy="false">(</mo> <mi>y</mi> <mo stretchy="false">)</mo> </mrow> <mo>=</mo> <mfrac> <mi>y</mi> <msqrt> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mrow> <mo stretchy="false">|</mo> <mi>y</mi> <mo stretchy="false">|</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> </mfrac> <mo>,</mo> <mspace width="3.33333pt" /> <mi>y</mi> <mo>∈</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo>,</mo> <mspace width="3.33333pt" /> <msup> <mi>B</mi> <mi>c</mi> </msup> <mrow> <mo>=</mo> <mo stretchy="false">{</mo> <mi>x</mi> <mo>∈</mo> </mrow> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mrow> <mo>:</mo> <mo stretchy="false">|</mo> <mi>x</mi> <mo stretchy="false">|</mo> <mo>&gt;</mo> <mi>R</mi> <mo stretchy="false">}</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>&#xa0;is an exterior domain in <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\mathbb {R}^{N},~N\ge 3,~R&gt;0,~a\in L^{1}_{loc}((0,1],\mathbb {R})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo>,</mo> <mspace width="3.33333pt" /> <mi>N</mi> <mo>≥</mo> <mn>3</mn> <mo>,</mo> <mspace width="3.33333pt" /> <mi>R</mi> <mo>&gt;</mo> <mn>0</mn> <mo>,</mo> <mspace width="3.33333pt" /> <mi>a</mi> <mo>∈</mo> <msubsup> <mi>L</mi> <mrow> <mi mathvariant="italic">loc</mi> </mrow> <mn>1</mn> </msubsup> <mrow> <mo stretchy="false">(</mo> <mrow> <mo stretchy="false">(</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo stretchy="false">]</mo> </mrow> <mo>,</mo> <mi mathvariant="double-struck">R</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> may change sign,&#xa0;<InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\lambda \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>λ</mi> </math></EquationSource> </InlineEquation> is a nonnegative real parameter,&#xa0;<InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(f\in C([0,\infty ),\mathbb {R})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>f</mi> <mo>∈</mo> <mi>C</mi> <mo stretchy="false">(</mo> <mo stretchy="false">[</mo> <mn>0</mn> <mo>,</mo> <mi>∞</mi> <mo stretchy="false">)</mo> <mo>,</mo> <mi mathvariant="double-struck">R</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>&#xa0;with <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(f(0)&gt;0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>f</mi> <mo stretchy="false">(</mo> <mn>0</mn> <mo stretchy="false">)</mo> <mo>&gt;</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation>.&#xa0;The proof of the main result is based on the Leray-Schauder fixed point theorem.</p>

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Positive radial solutions for the problem with Minkowski-curvature operator on an exterior domain

  • Jingxuan Wang,
  • Ruyun Ma,
  • Yufang Wang

摘要

We are concerned with the problem with Minkowski-curvature operator on an exterior domain \( \left\{ \begin{array}{ll} -\textrm{div}\Big (\phi _{N}(\nabla u(x))\Big )=\lambda a(|x|)f(u(x)),~~~\textrm{in}~B^{c},\\ \frac{\partial u}{\partial n}\mid _{\partial B^{c}}=0,~~\lim \limits _{|x|\rightarrow \infty }u(x)=0, \end{array} \right. \) - div ( ϕ N ( u ( x ) ) ) = λ a ( | x | ) f ( u ( x ) ) , in B c , u n B c = 0 , lim | x | u ( x ) = 0 , where \(\frac{\partial u}{\partial n}\) u n denotes the outward normal derivative of u, \(\phi _{N}(y)=\frac{y}{\sqrt{1-|y|^{2}}},~y\in \mathbb {R}^{N},~B^{c}=\{x\in \mathbb {R}^{N}:|x|>R\}\) ϕ N ( y ) = y 1 - | y | 2 , y R N , B c = { x R N : | x | > R }  is an exterior domain in \(\mathbb {R}^{N},~N\ge 3,~R>0,~a\in L^{1}_{loc}((0,1],\mathbb {R})\) R N , N 3 , R > 0 , a L loc 1 ( ( 0 , 1 ] , R ) may change sign,  \(\lambda \) λ is a nonnegative real parameter,  \(f\in C([0,\infty ),\mathbb {R})\) f C ( [ 0 , ) , R )  with \(f(0)>0\) f ( 0 ) > 0 . The proof of the main result is based on the Leray-Schauder fixed point theorem.