<p>Let <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(T_{d}^{\theta }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>T</mi> <mrow> <mi>d</mi> </mrow> <mi>θ</mi> </msubsup> </math></EquationSource> </InlineEquation> be a bilinear Dunkl-generalized fractional integral operator, and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(T_{d,\vec {b}}^{\theta }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>T</mi> <mrow> <mi>d</mi> <mo>,</mo> <mover accent="true"> <mi>b</mi> <mo stretchy="false">→</mo> </mover> </mrow> <mi>θ</mi> </msubsup> </math></EquationSource> </InlineEquation> be a commutator formed by <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\vec {b}=(b_{1},b_{2})\in (\text {BMO} _{d} (\mathbb {R}^{N}))^{2} \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mover accent="true"> <mi>b</mi> <mo stretchy="false">→</mo> </mover> <mo>=</mo> <mrow> <mo stretchy="false">(</mo> <msub> <mi>b</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>b</mi> <mn>2</mn> </msub> <mo stretchy="false">)</mo> </mrow> <mo>∈</mo> <msup> <mrow> <mo stretchy="false">(</mo> <msub> <mtext>BMO</mtext> <mi>d</mi> </msub> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> <mn>2</mn> </msup> </mrow> </math></EquationSource> </InlineEquation> and the <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(T_{d}^{\theta }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>T</mi> <mrow> <mi>d</mi> </mrow> <mi>θ</mi> </msubsup> </math></EquationSource> </InlineEquation>. In this setting, we prove that the <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(T_{d}^{\theta }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>T</mi> <mrow> <mi>d</mi> </mrow> <mi>θ</mi> </msubsup> </math></EquationSource> </InlineEquation> is bounded from product of Dunkl-Morrey spaces <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(\mathcal {M}^{p_{1},q_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {M}^{p_{2},q_{2}}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">M</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>p</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>q</mi> <mn>1</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo>×</mo> <msubsup> <mrow> <mi mathvariant="script">M</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>p</mi> <mn>2</mn> </msub> <mo>,</mo> <msub> <mi>q</mi> <mn>2</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> into spaces <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(\mathcal {M}^{p,q}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">M</mi> </mrow> <mi>d</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, and it is also bounded from product of generalized Dunkl-Morrey spaces <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(\mathcal {L}^{\varphi _{1},p_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {L}^{\varphi _{2},p_{2}}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">L</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>φ</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>p</mi> <mn>1</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo>×</mo> <msubsup> <mrow> <mi mathvariant="script">L</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>φ</mi> <mn>2</mn> </msub> <mo>,</mo> <msub> <mi>p</mi> <mn>2</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> into spaces <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(\mathcal {L}^{\varphi ,p}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">L</mi> </mrow> <mi>d</mi> <mrow> <mi>φ</mi> <mo>,</mo> <mi>p</mi> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, where <InlineEquation ID="IEq10"> <EquationSource Format="TEX">\(\frac{1}{p}=\frac{1}{p_{1}}+\frac{1}{p_{2}}-2\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfrac> <mn>1</mn> <mi>p</mi> </mfrac> <mo>=</mo> <mfrac> <mn>1</mn> <msub> <mi>p</mi> <mn>1</mn> </msub> </mfrac> <mo>+</mo> <mfrac> <mn>1</mn> <msub> <mi>p</mi> <mn>2</mn> </msub> </mfrac> <mo>-</mo> <mn>2</mn> <mi>θ</mi> </mrow> </math></EquationSource> </InlineEquation> with <InlineEquation ID="IEq11"> <EquationSource Format="TEX">\(1&lt;p_{i}&lt;\frac{1}{\theta _{i}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1</mn> <mo>&lt;</mo> <msub> <mi>p</mi> <mi>i</mi> </msub> <mo>&lt;</mo> <mfrac> <mn>1</mn> <msub> <mi>θ</mi> <mi>i</mi> </msub> </mfrac> </mrow> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq12"> <EquationSource Format="TEX">\(\frac{1}{q}=\frac{1}{q_{1}}+\frac{1}{q_{2}}-2\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfrac> <mn>1</mn> <mi>q</mi> </mfrac> <mo>=</mo> <mfrac> <mn>1</mn> <msub> <mi>q</mi> <mn>1</mn> </msub> </mfrac> <mo>+</mo> <mfrac> <mn>1</mn> <msub> <mi>q</mi> <mn>2</mn> </msub> </mfrac> <mo>-</mo> <mn>2</mn> <mi>θ</mi> </mrow> </math></EquationSource> </InlineEquation> for <InlineEquation ID="IEq13"> <EquationSource Format="TEX">\(1&lt;q_{i}&lt;\frac{1}{\theta _{i}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1</mn> <mo>&lt;</mo> <msub> <mi>q</mi> <mi>i</mi> </msub> <mo>&lt;</mo> <mfrac> <mn>1</mn> <msub> <mi>θ</mi> <mi>i</mi> </msub> </mfrac> </mrow> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq14"> <EquationSource Format="TEX">\(i=1,2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation>, and Lebesgue measurable functions <InlineEquation ID="IEq15"> <EquationSource Format="TEX">\(\varphi _{1}, \varphi _{2}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>φ</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>φ</mi> <mn>2</mn> </msub> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq16"> <EquationSource Format="TEX">\(\varphi \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>φ</mi> </math></EquationSource> </InlineEquation> belong to class <InlineEquation ID="IEq17"> <EquationSource Format="TEX">\(\mathbb {W}^{\delta }_{d}\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mrow> <mi mathvariant="double-struck">W</mi> </mrow> <mi>d</mi> <mi>δ</mi> </msubsup> </math></EquationSource> </InlineEquation> for <InlineEquation ID="IEq18"> <EquationSource Format="TEX">\(\delta \in (0,2)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>δ</mi> <mo>∈</mo> <mo stretchy="false">(</mo> <mn>0</mn> <mo>,</mo> <mn>2</mn> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> and satisfy <InlineEquation ID="IEq19"> <EquationSource Format="TEX">\(\varphi _{1}\varphi _{2}=\varphi \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>φ</mi> <mn>1</mn> </msub> <msub> <mi>φ</mi> <mn>2</mn> </msub> <mo>=</mo> <mi>φ</mi> </mrow> </math></EquationSource> </InlineEquation>. Furthermore, the boundedness of the commutator <InlineEquation ID="IEq20"> <EquationSource Format="TEX">\(T_{d,\vec {b}}^{\theta }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>T</mi> <mrow> <mi>d</mi> <mo>,</mo> <mover accent="true"> <mi>b</mi> <mo stretchy="false">→</mo> </mover> </mrow> <mi>θ</mi> </msubsup> </math></EquationSource> </InlineEquation> on product of spaces <InlineEquation ID="IEq21"> <EquationSource Format="TEX">\(\mathcal {M}^{p_{1},q_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {M}^{p_{2},q_{2}}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">M</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>p</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>q</mi> <mn>1</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo>×</mo> <msubsup> <mrow> <mi mathvariant="script">M</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>p</mi> <mn>2</mn> </msub> <mo>,</mo> <msub> <mi>q</mi> <mn>2</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> and on product of spaces <InlineEquation ID="IEq22"> <EquationSource Format="TEX">\(\mathcal {L}^{\varphi _{1},p_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {L}^{\varphi _{2},p_{2}}_{d}(\mathbb {R}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mrow> <mi mathvariant="script">L</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>φ</mi> <mn>1</mn> </msub> <mo>,</mo> <msub> <mi>p</mi> <mn>1</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo>×</mo> <msubsup> <mrow> <mi mathvariant="script">L</mi> </mrow> <mi>d</mi> <mrow> <msub> <mi>φ</mi> <mn>2</mn> </msub> <mo>,</mo> <msub> <mi>p</mi> <mn>2</mn> </msub> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> is also obtained.</p>

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Bilinear Dunkl-generalized fractional integrals and their commutators on generalized Morrey spaces

  • Miaomiao Wang,
  • Shuangping Tao

摘要

Let \(T_{d}^{\theta }\) T d θ be a bilinear Dunkl-generalized fractional integral operator, and \(T_{d,\vec {b}}^{\theta }\) T d , b θ be a commutator formed by \(\vec {b}=(b_{1},b_{2})\in (\text {BMO} _{d} (\mathbb {R}^{N}))^{2} \) b = ( b 1 , b 2 ) ( BMO d ( R N ) ) 2 and the \(T_{d}^{\theta }\) T d θ . In this setting, we prove that the \(T_{d}^{\theta }\) T d θ is bounded from product of Dunkl-Morrey spaces \(\mathcal {M}^{p_{1},q_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {M}^{p_{2},q_{2}}_{d}(\mathbb {R}^{N})\) M d p 1 , q 1 ( R N ) × M d p 2 , q 2 ( R N ) into spaces \(\mathcal {M}^{p,q}_{d}(\mathbb {R}^{N})\) M d p , q ( R N ) , and it is also bounded from product of generalized Dunkl-Morrey spaces \(\mathcal {L}^{\varphi _{1},p_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {L}^{\varphi _{2},p_{2}}_{d}(\mathbb {R}^{N})\) L d φ 1 , p 1 ( R N ) × L d φ 2 , p 2 ( R N ) into spaces \(\mathcal {L}^{\varphi ,p}_{d}(\mathbb {R}^{N})\) L d φ , p ( R N ) , where \(\frac{1}{p}=\frac{1}{p_{1}}+\frac{1}{p_{2}}-2\theta \) 1 p = 1 p 1 + 1 p 2 - 2 θ with \(1<p_{i}<\frac{1}{\theta _{i}}\) 1 < p i < 1 θ i , \(\frac{1}{q}=\frac{1}{q_{1}}+\frac{1}{q_{2}}-2\theta \) 1 q = 1 q 1 + 1 q 2 - 2 θ for \(1<q_{i}<\frac{1}{\theta _{i}}\) 1 < q i < 1 θ i , \(i=1,2\) i = 1 , 2 , and Lebesgue measurable functions \(\varphi _{1}, \varphi _{2}\) φ 1 , φ 2 and \(\varphi \) φ belong to class \(\mathbb {W}^{\delta }_{d}\) W d δ for \(\delta \in (0,2)\) δ ( 0 , 2 ) and satisfy \(\varphi _{1}\varphi _{2}=\varphi \) φ 1 φ 2 = φ . Furthermore, the boundedness of the commutator \(T_{d,\vec {b}}^{\theta }\) T d , b θ on product of spaces \(\mathcal {M}^{p_{1},q_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {M}^{p_{2},q_{2}}_{d}(\mathbb {R}^{N})\) M d p 1 , q 1 ( R N ) × M d p 2 , q 2 ( R N ) and on product of spaces \(\mathcal {L}^{\varphi _{1},p_{1}}_{d}(\mathbb {R}^{N})\times \mathcal {L}^{\varphi _{2},p_{2}}_{d}(\mathbb {R}^{N})\) L d φ 1 , p 1 ( R N ) × L d φ 2 , p 2 ( R N ) is also obtained.