<abstract xmlns="http://www.w3.org/1999/xhtml">In this paper, we show the existence of solutions for the nonlinear elliptic equations of the form<disp-formula><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/j_mjpaa-2020-0002_eq_001.png"></graphic><math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mo>{</mo><mrow><mtable><mtr><mtd><mrow><mo>-</mo><mtext>div</mtext><mi> </mi><mi>a</mi><mrow><mo>(</mo><mrow><mi>x</mi><mo>,</mo><mi>u</mi><mo>,</mo><mo>∇</mo><mi>u</mi></mrow><mo>)</mo></mrow><mo>=</mo><mi>f</mi><mo>,</mo></mrow></mtd></mtr><mtr><mtd><mrow><mi>u</mi><mo>∈</mo><msubsup><mrow><mi>W</mi></mrow><mn>0</mn><mn>1</mn></msubsup><mi>L</mi><mi>ϕ</mi><mrow><mo>(</mo><mi>Ω</mi><mo>)</mo></mrow><mo>∩</mo><msup><mrow><mi>L</mi></mrow><mo>∞</mo></msup><mrow><mo>(</mo><mi>Ω</mi><mo>)</mo></mrow><mo>,</mo></mrow></mtd></mtr></mtable></mrow></mrow></mrow></math><tex-math>\left\{ {\matrix{ { - {\rm{div}}\,a\left( {x,u,\nabla u} \right) = f,} \hfill \cr {u \in W_0^1L\varphi \left( \Omega \right) \cap {L^\infty }\left( \Omega \right),} \hfill \cr } } \right.</tex-math></alternatives></disp-formula>where <inline-formula><alternatives><inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/j_mjpaa-2020-0002_eq_002.png"></inline-graphic><math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mrow><mi>a</mi><mrow><mo>(</mo><mrow><mi>x</mi><mo>,</mo><mi>s</mi><mo>,</mo><mi>ξ</mi></mrow><mo>)</mo></mrow><mo>⋅</mo><mi>ξ</mi><mo>≥</mo><msubsup><mrow><mover><mi>ϕ</mi><mo>¯</mo></mover></mrow><mi>x</mi><mrow><mo>-</mo><mn>1</mn></mrow></msubsup><mrow><mo>(</mo><mrow><mi>ϕ</mi><mrow><mo>(</mo><mrow><mi>x</mi><mo>,</mo><mi>h</mi><mrow><mo>(</mo><mrow><mrow><mo>|</mo><mi>s</mi><mo>|</mo></mrow></mrow><mo>)</mo></mrow></mrow><mo>)</mo></mrow></mrow><mo>)</mo></mrow><mi>ϕ</mi><mrow><mo>(</mo><mrow><mi>x</mi><mo>,</mo><mrow><mo>|</mo><mi>ξ</mi><mo>|</mo></mrow></mrow><mo>)</mo></mrow></mrow></math><tex-math>a\left( {x,s,\xi } \right) \cdot \xi \ge \bar \varphi _x^{ - 1}\left( {\varphi \left( {x,h\left( {\left| s \right|} \right)} \right)} \right)\varphi \left( {x,\left| \xi \right|} \right)</tex-math></alternatives></inline-formula> and <italic>h</italic> : ℝ+→]0, 1] is a continuous decreasing function with unbounded primitive. The second term <italic>f</italic> belongs to <italic>LN</italic>(Ω) or to <italic>Lm</italic>(Ω), with <inline-formula><alternatives><inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/j_mjpaa-2020-0002_eq_003.png"></inline-graphic><math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mrow><mi>m</mi><mo>=</mo><mfrac><mrow><mi>r</mi><mi>N</mi></mrow><mrow><mi>r</mi><mo>+</mo><mn>1</mn></mrow></mfrac></mrow></math><tex-math>m = {{rN} \over {r + 1}}</tex-math></alternatives></inline-formula> for some <italic>r</italic> > 0 and <italic>φ</italic> is a Musielak function satisfying the Δ2-condition.</abstract>

In this paper, we show the existence of solutions for the nonlinear elliptic equations of the form{-div a(x,u,∇u)=f,u∈W01Lϕ(Ω)∩L∞(Ω),\left\{ {\matrix{   { - {\rm{div}}\,a\left( {x,u,\nabla u} \right) = f,} \hfill  \cr    {u \in W_0^1L\varphi \left( \Omega  \right) \cap {L^\infty }\left( \Omega  \right),} \hfill  \cr  } } \right.where a(x,s,ξ)⋅ξ≥ϕ¯x-1(ϕ(x,h(|s|)))ϕ(x,|ξ|)a\left( {x,s,\xi } \right) \cdot \xi  \ge \bar \varphi _x^{ - 1}\left( {\varphi \left( {x,h\left( {\left| s \right|} \right)} \right)} \right)\varphi \left( {x,\left| \xi  \right|} \right) and h : ℝ+→]0, 1] is a continuous decreasing function with unbounded primitive. The second term f belongs to LN(Ω) or to Lm(Ω), with m=rNr+1m = {{rN} \over {r + 1}} for some r > 0 and φ is a Musielak function satisfying the Δ2-condition.

Existence of a weak bounded solution for nonlinear degenerate elliptic equations in Musielak-Orlicz spaces

Department of Mathematics, Faculty of Sciences Dhar El Mahraz

Department of Mathematics, Faculty of Sciences El Jadida

Moroccan Journal of Pure and Applied Analysis

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

In this paper, we show the existence of solutions for the nonlinear elliptic equations of the form{-div a(x,u,∇u)=f,u∈W01Lϕ(Ω)∩L∞(Ω),\left\{ {\matrix{   { -...

Existence of a weak bounded solution for nonlinear degenerate elliptic equations in Musielak-Orlicz spaces

Publié en ligne: 29 mai 2020

Pages: 16 - 33

Reçu: 20 nov. 2019

Accepté: 26 févr. 2020

DOI: https://doi.org/10.2478/mjpaa-2020-0002

Mots clés
Elliptic equations, Musielak-Orlicz-Sobolev spaces, -estimates, Bounded solutions

© 2020 M. Bourahma et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Existence of a weak bounded solution for nonlinear degenerate elliptic equations in Musielak-Orlicz spaces

Publié en ligne: 29 mai 2020

Pages: 16 - 33

Reçu: 20 nov. 2019

Accepté: 26 févr. 2020

DOI: https://doi.org/10.2478/mjpaa-2020-0002

Mots clésElliptic equations, Musielak-Orlicz-Sobolev spaces, -estimates, Bounded solutions

© 2020 M. Bourahma et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
Elliptic equations, Musielak-Orlicz-Sobolev spaces, -estimates, Bounded solutions