<p>We prove existence of solutions to the following problem <Equation ID="Equ80"> <MediaObject> <ImageObject Color="BlackWhite" FileRef="229_2025_1619_Article_Equ80.gif" Format="GIF" Height="43" Rendition="HTML" Resolution="72" Type="Linedraw" Width="269" /> </MediaObject> <EquationSource Format="TEX">\(\begin{aligned} \left\{ \begin{array}{ll} -\Delta _1 u +g(u)|Du|=h(u)f &amp; \text {in } \Omega ,\\ u=0 &amp; \text {on } \partial \Omega , \end{array}\right. \end{aligned}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mrow> <mtable> <mtr> <mtd columnalign="right"> <mfenced open="{"> <mrow> <mtable> <mtr> <mtd columnalign="left"> <mrow> <mo>-</mo> <msub> <mi mathvariant="normal">Δ</mi> <mn>1</mn> </msub> <mi>u</mi> <mo>+</mo> <mi>g</mi> <mrow> <mo stretchy="false">(</mo> <mi>u</mi> <mo stretchy="false">)</mo> </mrow> <mrow> <mo stretchy="false">|</mo> <mi>D</mi> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mo>=</mo> <mi>h</mi> <mrow> <mo stretchy="false">(</mo> <mi>u</mi> <mo stretchy="false">)</mo> </mrow> <mi>f</mi> </mrow> </mtd> <mtd columnalign="left"> <mrow> <mtext>in</mtext> <mspace width="0.333333em" /> <mi mathvariant="normal">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> <mtext>on</mtext> <mspace width="0.333333em" /> <mi>∂</mi> <mi mathvariant="normal">Ω</mi> <mo>,</mo> </mrow> </mtd> </mtr> </mtable> </mrow> </mfenced> </mtd> </mtr> </mtable> </mrow> </math></EquationSource> </Equation>where <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="229_2025_1619_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="58" /> </InlineMediaObject> <EquationSource Format="TEX">\(\Omega \subset \mathbb {R}^N\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="normal">Ω</mi> <mo>⊂</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> </mrow> </math></EquationSource> </InlineEquation>, with <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="229_2025_1619_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="48" /> </InlineMediaObject> <EquationSource Format="TEX">\(N\ge 2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>N</mi> <mo>≥</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation>, is an open and bounded set with Lipschitz boundary, <i>g</i> is a continuous and positive function which possibly blows up at the origin and bounded at infinity and <i>h</i> is a continuous and nonnegative function bounded at infinity (possibly blowing up at the origin) and finally <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="229_2025_1619_Article_IEq3.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="110" /> </InlineMediaObject> <EquationSource Format="TEX">\(0 \le f \in L^N(\Omega )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>0</mn> <mo>≤</mo> <mi>f</mi> <mo>∈</mo> <msup> <mi>L</mi> <mi>N</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mi mathvariant="normal">Ω</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>. As a by-product, this paper extends the results found where <i>g</i> is a continuous and bounded function. We investigate the interplay between <i>g</i> and <i>h</i> in order to have existence of solutions.</p>

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Existence of solutions for 1-laplacian problems with singular first order terms

  • Francesco Balducci

摘要

We prove existence of solutions to the following problem \(\begin{aligned} \left\{ \begin{array}{ll} -\Delta _1 u +g(u)|Du|=h(u)f & \text {in } \Omega ,\\ u=0 & \text {on } \partial \Omega , \end{array}\right. \end{aligned}\) - Δ 1 u + g ( u ) | D u | = h ( u ) f in Ω , u = 0 on Ω , where \(\Omega \subset \mathbb {R}^N\) Ω R N , with \(N\ge 2\) N 2 , is an open and bounded set with Lipschitz boundary, g is a continuous and positive function which possibly blows up at the origin and bounded at infinity and h is a continuous and nonnegative function bounded at infinity (possibly blowing up at the origin) and finally \(0 \le f \in L^N(\Omega )\) 0 f L N ( Ω ) . As a by-product, this paper extends the results found where g is a continuous and bounded function. We investigate the interplay between g and h in order to have existence of solutions.