<p>In this article, we introduce generalized mean <InlineEquation ID="IEq2"> <EquationSource Format="MATHML"><math> <mo stretchy="false">(</mo> <mi>ψ</mi> <mo>,</mo> <mi>ϕ</mi> <mo stretchy="false">)</mo> </math></EquationSource> <EquationSource Format="TEX">$(\psi ,\phi )$</EquationSource> </InlineEquation>-cyclic contractions by integrating the concepts of Reich-type contractions, <InlineEquation ID="IEq3"> <EquationSource Format="MATHML"><math> <mo stretchy="false">(</mo> <mi>ψ</mi> <mo>,</mo> <mi>ϕ</mi> <mo stretchy="false">)</mo> </math></EquationSource> <EquationSource Format="TEX">$(\psi ,\phi )$</EquationSource> </InlineEquation>-contractions and cyclic contractions on complete metric spaces. We establish fixed point theorems for these generalized cyclic contractions under suitable conditions on the control functions <i>ψ</i> and <i>ϕ</i>. By replacing the Reich-type contraction with a Ćirić-type contraction, we further define the generalized Ćirić-type <InlineEquation ID="IEq4"> <EquationSource Format="MATHML"><math> <mo stretchy="false">(</mo> <mi>ψ</mi> <mo>,</mo> <mi>ϕ</mi> <mo stretchy="false">)</mo> </math></EquationSource> <EquationSource Format="TEX">$(\psi ,\phi )$</EquationSource> </InlineEquation>-cyclic contraction and prove corresponding fixed point results. As a special case, we present the Proinov-type cyclic contraction and develop the Hutchinson-Barnsley theory for this setting, leading to the existence of a Proinov-type cyclic attractor. An explicit example is provided to illustrate the construction of such an attractor, demonstrating applicability beyond Banach-type cases. These results unify and extend several well-known fixed point theorems, offering a broader framework for cyclic mappings and their applications in fractal theory.</p>

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Generalized mean \((\psi ,\phi )\)-cyclic contractions: unified fixed point theorems and Proinov-type cyclic attractors

  • Athul Puthusseri,
  • D. Ramesh Kumar

摘要

In this article, we introduce generalized mean ( ψ , ϕ ) $(\psi ,\phi )$ -cyclic contractions by integrating the concepts of Reich-type contractions, ( ψ , ϕ ) $(\psi ,\phi )$ -contractions and cyclic contractions on complete metric spaces. We establish fixed point theorems for these generalized cyclic contractions under suitable conditions on the control functions ψ and ϕ. By replacing the Reich-type contraction with a Ćirić-type contraction, we further define the generalized Ćirić-type ( ψ , ϕ ) $(\psi ,\phi )$ -cyclic contraction and prove corresponding fixed point results. As a special case, we present the Proinov-type cyclic contraction and develop the Hutchinson-Barnsley theory for this setting, leading to the existence of a Proinov-type cyclic attractor. An explicit example is provided to illustrate the construction of such an attractor, demonstrating applicability beyond Banach-type cases. These results unify and extend several well-known fixed point theorems, offering a broader framework for cyclic mappings and their applications in fractal theory.