<p>In this article, we introduce a fractional Hankel transform specifically adapted to a new class of generalized functions within the Colombeau algebra, called the space of tempered <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11868_2025_702_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\( H^F \)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>H</mi> <mi>F</mi> </msup> </math></EquationSource> </InlineEquation>-generalized functions, denoted by <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11868_2025_702_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="44" /> </InlineMediaObject> <EquationSource Format="TEX">\( \mathcal {H}_{\mu ,\alpha ,\tau } \)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi mathvariant="script">H</mi> <mrow> <mi>μ</mi> <mo>,</mo> <mi>α</mi> <mo>,</mo> <mi>τ</mi> </mrow> </msub> </math></EquationSource> </InlineEquation>. We rigorously establish fundamental properties of this transform, including Parseval’s identity and its interaction with the Kepinski-type operator <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11868_2025_702_Article_IEq3.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="44" /> </InlineMediaObject> <EquationSource Format="TEX">\( \Delta _{\mu ,\alpha ,x} \)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi mathvariant="normal">Δ</mi> <mrow> <mi>μ</mi> <mo>,</mo> <mi>α</mi> <mo>,</mo> <mi>x</mi> </mrow> </msub> </math></EquationSource> </InlineEquation>. To illustrate the practical relevance of our construction, we apply the transform to the resolution of partial differential equations involving singularities, particularly those associated with <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11868_2025_702_Article_IEq3.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="44" /> </InlineMediaObject> <EquationSource Format="TEX">\( \Delta _{\mu ,\alpha ,x} \)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi mathvariant="normal">Δ</mi> <mrow> <mi>μ</mi> <mo>,</mo> <mi>α</mi> <mo>,</mo> <mi>x</mi> </mrow> </msub> </math></EquationSource> </InlineEquation>. This development expands the toolkit available for addressing problems with non-smooth data in applied mathematics and engineering.</p>

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Fractional Hankel transform in Colombeau algebra

  • Latifa El Bezdaoui,
  • Abdelah Taqbibt,
  • M’hamed Elomari,
  • Lalla Saadia Chadli

摘要

In this article, we introduce a fractional Hankel transform specifically adapted to a new class of generalized functions within the Colombeau algebra, called the space of tempered \( H^F \) H F -generalized functions, denoted by \( \mathcal {H}_{\mu ,\alpha ,\tau } \) H μ , α , τ . We rigorously establish fundamental properties of this transform, including Parseval’s identity and its interaction with the Kepinski-type operator \( \Delta _{\mu ,\alpha ,x} \) Δ μ , α , x . To illustrate the practical relevance of our construction, we apply the transform to the resolution of partial differential equations involving singularities, particularly those associated with \( \Delta _{\mu ,\alpha ,x} \) Δ μ , α , x . This development expands the toolkit available for addressing problems with non-smooth data in applied mathematics and engineering.