In this paper, let $ (\mathscr{A}, \mathscr{C}, \mathscr{B}) $ be a recollement of extriangulated categories. We construct a silting object and a tilting object from the two end terms of a recollement. We also show that the reverse direction holds under natural assumptions. Moreover, we show that our gluing preserves cotorsion pairs.
Citation: Zhen Zhang, Shance Wang. Silting objects and recollements of extriangulated categories[J]. AIMS Mathematics, 2024, 9(9): 24796-24809. doi: 10.3934/math.20241207
In this paper, let $ (\mathscr{A}, \mathscr{C}, \mathscr{B}) $ be a recollement of extriangulated categories. We construct a silting object and a tilting object from the two end terms of a recollement. We also show that the reverse direction holds under natural assumptions. Moreover, we show that our gluing preserves cotorsion pairs.
[1] | A. A. Be$\check{\rm{i}}$linson, J. Bernstein, P. Deligne, F. Pervers, Analysis and topology on singular spaces, Astérisque, 1982. |
[2] | L. A. Hügel, S. Koenig, Q. Liu, On the uniqueness of stratifications of derived module categories, J. Algebra, 359 (2012), 120–137. https://doi.org/10.1016/j.jalgebra.2012.02.022 doi: 10.1016/j.jalgebra.2012.02.022 |
[3] | C. Psaroudakis, Homological theory of recollements of abelian categories, J. Algebra, 398 (2014), 63–110. https://doi.org/10.1016/j.jalgebra.2013.09.020 doi: 10.1016/j.jalgebra.2013.09.020 |
[4] | V. Franjou, T. Pirashvili, Comparison of abelian categories recollements, Doc. Math., 9 (2004), 41–56. https://doi.org/10.4171/dm/156 doi: 10.4171/dm/156 |
[5] | J. Chen, Cotorsion pairs in a recollement of triangulated categories, Commun. Algebra, 41 (2013), 2903–2915. https://doi.org/10.1080/00927872.2012.666598 doi: 10.1080/00927872.2012.666598 |
[6] | X. Ma, Z. Huang, Torsion pairs in recollements of abelian categories, Front. Math. China, 13 (2018), 875–892. https://doi.org/10.1007/s11464-018-0712-1 doi: 10.1007/s11464-018-0712-1 |
[7] | X. Ma, T. Zhao, Z. Huang, Gorenstein algebras and recollements, Commun. Algebra, 47 (2019), 3527–3538. https://doi.org/10.1080/00927872.2019.1567747 doi: 10.1080/00927872.2019.1567747 |
[8] | Y. Zheng, Balanced pairs induce recollements, Commun. Algebra, 45 (2017), 4238–4245. https://doi.org/10.1080/00927872.2016.1262384 doi: 10.1080/00927872.2016.1262384 |
[9] | Q. Liu, J. Vitória, D. Yang, Gluing silting objects, Nagoya Math. J., 216 (2014), 117–151. https://doi.org/10.1215/00277630-2847151 doi: 10.1215/00277630-2847151 |
[10] | H. Nakaoka, Y. Palu, Extriangulated categories, Hovey twin cotorsion pairs and model structures, Cah. Topol. Geom. Differ. Categ., 60 (2019), 117–193. |
[11] | B. Zhu, X. Zhuang, Tilting subcategories in extriangulated categories, Front. Math. China, 15 (2020), 225–253. https://doi.org/10.1007/s11464-020-0811-7 doi: 10.1007/s11464-020-0811-7 |
[12] | L. Wang, J. Wei, H. Zhang, Recollements of extriangulated categories, Colloq. Math., 167 (2022), 239–259. https://doi.org/10.4064/cm8457-2-2021 doi: 10.4064/cm8457-2-2021 |
[13] | F. Bonometti, Gluing silting objects along recollements of well generated triangulated categories, arXiv, 2020. https://doi.org/10.48550/arXiv.2001.02207 |
[14] | L. A. Hügel, S. Koenig, Q. Liu, Recollements and tilting objects, J. Pure Appl. Algebra, 215 (2011), 420–438. https://doi.org/10.1016/j.jpaa.2010.04.027 doi: 10.1016/j.jpaa.2010.04.027 |
[15] | X. Ma, T. Zhao, Recollements and tilting modules, Commun. Algebra, 48 (2020), 5163–5175. https://doi.org/10.1080/00927872.2020.1781874 doi: 10.1080/00927872.2020.1781874 |
[16] | Y. Liu, H. Nakaoka, Hearts of twin cotorsion pairs on extriangulated categories, J. Algebra, 528 (2019), 96–149. https://doi.org/10.1016/j.jalgebra.2019.03.005 doi: 10.1016/j.jalgebra.2019.03.005 |
[17] | T. Adachi, M. Tsukamoto, Hereditary cotorsion pairs and silting subcategories in extriangulated categories, J. Algebra, 594 (2022), 109–137. https://doi.org/10.1016/j.jalgebra.2021.11.029 doi: 10.1016/j.jalgebra.2021.11.029 |
[18] | X. Ma, Z. Xie, T. Zhao, Support $\tau$-tilting modules and recollement, Colloq. Math., 167 (2022), 303–328. https://doi.org/10.4064/CM8358-11-2020 doi: 10.4064/CM8358-11-2020 |
[19] | Y. Liu, P. Zhou, Y. Zhou, B. Zhu, Silting reduction in extriangulated categories, arXiv, 2021. https://doi.org/10.48550/arXiv.2108.07964 |