<p>In this paper, we study the existence and regularity of solutions for <i>p</i>-Kirchhoff elliptic problems involving a singular nonlinear term. The model problem is <Equation ID="Equ55"> <EquationSource Format="TEX">\(\begin{aligned} \left\{ \begin{array}{ll} -M\left( \int _{\varOmega }|\nabla u|^{p}\right) \textrm{div}\left( |\nabla u|^{p-2}\nabla u\right) =\dfrac{f(x)}{u^{\gamma }} &amp; \quad \text{ in } \varOmega ,\\ u&gt;0 &amp; \quad \text {in } \varOmega ,\\ u=0&amp; \quad \text {on } \partial \varOmega , \end{array}\right. \end{aligned}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mrow> <mtable> <mtr> <mtd columnalign="right"> <mfenced open="{"> <mrow> <mtable> <mtr> <mtd columnalign="left"> <mrow> <mo>-</mo> <mi>M</mi> <mfenced close=")" open="("> <msub> <mo>∫</mo> <mi>Ω</mi> </msub> <msup> <mrow> <mo stretchy="false">|</mo> <mi mathvariant="normal">∇</mi> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mi>p</mi> </msup> </mfenced> <mtext>div</mtext> <mfenced close=")" open="("> <msup> <mrow> <mo stretchy="false">|</mo> <mi mathvariant="normal">∇</mi> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mrow> <mi>p</mi> <mo>-</mo> <mn>2</mn> </mrow> </msup> <mi mathvariant="normal">∇</mi> <mi>u</mi> </mfenced> <mo>=</mo> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mrow> <mi>f</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <msup> <mi>u</mi> <mi>γ</mi> </msup> </mfrac> </mstyle> </mrow> </mtd> <mtd columnalign="left"> <mrow> <mspace width="1em" /> <mspace width="0.333333em" /> <mtext>in</mtext> <mspace width="0.333333em" /> <mi>Ω</mi> <mo>,</mo> </mrow> </mtd> </mtr> <mtr> <mtd columnalign="left"> <mrow> <mrow /> <mi>u</mi> <mo>&gt;</mo> <mn>0</mn> </mrow> </mtd> <mtd columnalign="left"> <mrow> <mspace width="1em" /> <mtext>in</mtext> <mspace width="0.333333em" /> <mi>Ω</mi> <mo>,</mo> </mrow> </mtd> </mtr> <mtr> <mtd columnalign="left"> <mrow> <mrow /> <mi>u</mi> <mo>=</mo> <mn>0</mn> </mrow> </mtd> <mtd columnalign="left"> <mrow> <mspace width="1em" /> <mtext>on</mtext> <mspace width="0.333333em" /> <mi>∂</mi> <mi>Ω</mi> <mo>,</mo> </mrow> </mtd> </mtr> </mtable> </mrow> </mfenced> </mtd> </mtr> </mtable> </mrow> </math></EquationSource> </Equation>where <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\varOmega \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>Ω</mi> </math></EquationSource> </InlineEquation> is a bounded domain in <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\mathbb {R}^{N}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(1&lt;p&lt;N\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1</mn> <mo>&lt;</mo> <mi>p</mi> <mo>&lt;</mo> <mi>N</mi> </mrow> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(0&lt;\gamma \le 1\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>0</mn> <mo>&lt;</mo> <mi>γ</mi> <mo>≤</mo> <mn>1</mn> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(M: \mathbb {R}^{+}\rightarrow \mathbb {R}^{+}=[0;+\infty )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>M</mi> <mo>:</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mo>+</mo> </msup> <mo stretchy="false">→</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mo>+</mo> </msup> <mo>=</mo> <mrow> <mo stretchy="false">[</mo> <mn>0</mn> <mo>;</mo> <mo>+</mo> <mi>∞</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, is a continuous function satisfying some extra hypotheses. We will prove existence results for solutions under various assumptions on the summability of datum <i>f</i>.</p>

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Existence and Regularity Results for p-Kirchhoff Problems with Singular Nonlinearity

  • Abdelmoumene M’hamdi,
  • Rezak Souilah,
  • Hocine Ayadi

摘要

In this paper, we study the existence and regularity of solutions for p-Kirchhoff elliptic problems involving a singular nonlinear term. The model problem is \(\begin{aligned} \left\{ \begin{array}{ll} -M\left( \int _{\varOmega }|\nabla u|^{p}\right) \textrm{div}\left( |\nabla u|^{p-2}\nabla u\right) =\dfrac{f(x)}{u^{\gamma }} & \quad \text{ in } \varOmega ,\\ u>0 & \quad \text {in } \varOmega ,\\ u=0& \quad \text {on } \partial \varOmega , \end{array}\right. \end{aligned}\) - M Ω | u | p div | u | p - 2 u = f ( x ) u γ in Ω , u > 0 in Ω , u = 0 on Ω , where \(\varOmega \) Ω is a bounded domain in \(\mathbb {R}^{N}\) R N , \(1<p<N\) 1 < p < N , \(0<\gamma \le 1\) 0 < γ 1 and \(M: \mathbb {R}^{+}\rightarrow \mathbb {R}^{+}=[0;+\infty )\) M : R + R + = [ 0 ; + ) , is a continuous function satisfying some extra hypotheses. We will prove existence results for solutions under various assumptions on the summability of datum f.