Existence and multiplicity of positive solutions for a class of Kirchhoff type problems with singularity and critical exponents

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<abstract><p>In this paper, we study the multiplicity results of positive solutions for a class of Kirchhoff type problems with singularity and critical exponents. Combining with the Nehari method and variational method, we prove the existence of positive ground state solutions. Furthermore, we obtain a relationship between the number of positive solutions and the topology of the global maximum set of $ Q(x) $.</p></abstract>