<p>We present a bijection between torsion pairs in <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10468_2025_10321_Article_IEq3.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="38" /> </InlineMediaObject> <EquationSource Format="TEX">\(\text {coh}(\mathbb )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mtext>coh</mtext> <mo stretchy="false">(</mo> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> with corresponding <i>t</i>-structures in <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10468_2025_10321_Article_IEq1.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="79" /> </InlineMediaObject> <EquationSource Format="TEX">\(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mtext>D</mtext> <mi>b</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mtext>coh</mtext> <mrow> <mo stretchy="false">(</mo> <mi mathvariant="double-struck">X</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> where <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10468_2025_10321_Article_IEq5.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">\(\mathbb {X}\)</EquationSource> <EquationSource Format="MATHML"><math> <mi mathvariant="double-struck">X</mi> </math></EquationSource> </InlineEquation> represents a weighted projective line. When focusing on the split case, we derive a bijection between this class and corresponding torsion pairs in the module category of a concealed canonical algebra. Additionally, we demonstrate that if the aisle of a split t-structure in the derived category of a hereditary category contains an Ext-projective object, then it admits a tilting complex. Finally, we use the structure of the Auslander-Reiten quiver of <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10468_2025_10321_Article_IEq1.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="79" /> </InlineMediaObject> <EquationSource Format="TEX">\(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mtext>D</mtext> <mi>b</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mtext>coh</mtext> <mrow> <mo stretchy="false">(</mo> <mi mathvariant="double-struck">X</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> in order to classify split t-structures in <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10468_2025_10321_Article_IEq1.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="79" /> </InlineMediaObject> <EquationSource Format="TEX">\(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mtext>D</mtext> <mi>b</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mtext>coh</mtext> <mrow> <mo stretchy="false">(</mo> <mi mathvariant="double-struck">X</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Torsion Pairs and t-Structures in \(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\)

  • Edson Ribeiro Alvares,
  • D. D. Silva

摘要

We present a bijection between torsion pairs in \(\text {coh}(\mathbb )\) coh ( ) with corresponding t-structures in \(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\) D b ( coh ( X ) ) where \(\mathbb {X}\) X represents a weighted projective line. When focusing on the split case, we derive a bijection between this class and corresponding torsion pairs in the module category of a concealed canonical algebra. Additionally, we demonstrate that if the aisle of a split t-structure in the derived category of a hereditary category contains an Ext-projective object, then it admits a tilting complex. Finally, we use the structure of the Auslander-Reiten quiver of \(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\) D b ( coh ( X ) ) in order to classify split t-structures in \(\textrm{D}^{b}(\text {coh}(\mathbb {X}))\) D b ( coh ( X ) ) .