Randomized trial demonstrates existence of solutions in nonhomogeneous systems, indicating critical theories in mathematics.
The interest of this paper is that we use the critical point theory to prove the existence of a sequence of non-trivial solutions for a class of nonhomogeneous quasilinear Sub-elliptic systems with critical growth and logarithmic perturbation. More specially, we consider the following nonhomogeneous quasilinear Sub-elliptic system <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="block" overflow="scroll"> <m:mfenced close="" open="{"> <m:mrow> <m:mtable class="cases"> <m:mtr> <m:mtd columnalign="left"> <m:mo>−</m:mo> <m:msub> <m:mrow> <m:mi mathvariant="script">L</m:mi> </m:mrow> <m:mrow> <m:msub> <m:mrow> <m:mi>ϕ</m:mi> </m:mrow> <m:mrow> <m:mn>1</m:mn> </m:mrow> </m:msub> <m:mo>,</m:mo> <m:mi>H</m:mi> </m:mrow> </m:msub> <m:mi>u</m:mi> <m:mo>=</m:mo> <m:msub> <m:mrow> <m:mi>λ</m:mi> </m:mrow> <m:mrow> <m:mn>1</m:mn> </m:mrow> </m:msub> <m:mi>u</m:mi> <m:mo>+</m:mo> <m:msub> <m:mrow> <m:mi>μ</m:mi> </m:mrow> <m:mrow> <m:mn>1</m:mn> </m:mrow> </m:msub> <m:mi>u</m:mi> <m:mo></m:mo> <m:mi>log</m:mi> <m:msup> <m:mrow> <m:mi>u</m:mi> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mo>+</m:mo> <m:mfrac> <m:mrow> <m:mi>α</m:mi> </m:mrow> <m:mrow> <m:mi>α</m:mi> <m:mo>+</m:mo> <m:mi>β</m:mi> </m:mrow> </m:mfrac> <m:mo stretchy="false">|</m:mo> <m:mi>u</m:mi> <m:msup> <m:mrow> <m:mo stretchy="false">|</m:mo> </m:mrow> <m:mrow> <m:mi>α</m:mi> <m:mo>−</m:mo> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mo stretchy="false">|</m:mo> <m:mi>v</m:mi> <m:msup> <m:mrow> <m:mo stretchy="false">|</m:mo> </m:mrow> <m:mrow> <m:mi>β</m:mi> </m:mrow> </m:msup> <m:mi>u</m:mi> <m:mo>,</m:mo> </m:mtd> <m:mtd columnalign="left"> <m:mi>ξ</m:mi> <m:mo>∈</m:mo> <m:mi mathvariant="normal">Ω</m:mi> <m:mo>,</m:mo> </m:mtd> </m:mtr> <m:mtr> <m:mtd columnalign="left"> <m:mo>−</m:mo> <m:msub> <m:mrow> <m:mi mathvariant="script">L</m:mi> </m:mrow> <m:mrow> <m:msub> <m:mrow> <m:mi>ϕ</m:mi> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msub> <m:mo>,</m:mo> <m:mi>H</m:mi> </m:mrow> </m:msub> <m:mi>v</m:mi> <m:mo>=</m:mo> <m:msub> <m:mrow> <m:mi>λ</m:mi> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msub> <m:mi>v</m:mi> <m:mo>+</m:mo> <m:msub> <m:mrow> <m:mi>μ</m:mi> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msub> <m:mi>v</m:mi> <m:mo></m:mo> <m:mi>log</m:mi> <m:msup> <m:mrow> <m:mi>v</m:mi> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mo>+</m:mo> <m:mfrac> <m:mrow> <m:mi>β</m:mi> </m:mrow> <m:mrow> <m:mi>α</m:mi> <m:mo>+</m:mo> <m:mi>β</m:mi> </m:mrow> </m:mfrac> <m:mo stretchy="false">|</m:mo> <m:mi>u</m:mi> <m:msup> <m:mrow> <m:mo stretchy="false">|</m:mo> </m:mrow> <m:mrow> <m:mi>α</m:mi> </m:mrow> </m:msup> <m:mo stretchy="false">|</m:mo> <m:mi>v</m:mi> <m:msup> <m:mrow> <m:mo stretchy="false">|</m:mo> </m:mrow> <m:mrow> <m:mi>β</m:mi> <m:mo>−</m:mo> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mi>v</m:mi> <m:mo>,</m:mo>
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An et al. (2026) studied this question.
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