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A local-global property for compactly generated t-structures
时间:2025年08月11日 17:24 点击数:

报告人: 胡江胜

报告地点:人民大街校区惟真楼227室

报告时间:2025年08月14日星期四10:40-11:40

邀请人:扶先辉

报告摘要:

In this talk, we establish a bijection between compactly generated t-structures in the derived category of a commutative ring R and specific families of compactly generated t-structures over the local rings Rm where m runs through the maximal ideals in the Zariski spectrum Spec(R). These families are characterized by a gluing condition on their associated sequences of Thomason subsets of Spec(R). As an application, we generalize results of Trlifaj and Sahinkaya and provide an explicit bijection between cosilting objects of cofinite type over R and compatible families of cosilting objects of cofinite type over all localizations Rm at maximal primes. Furthermore, we demonstrate that the compact generation of a homotopically smashing t-structure can be verified locally at maximal ideal localizations. Combining this with a result of Balmer and Favi, we conclude that the ⊗-Telescope Conjecture for a quasi-coherent and quasi-separated scheme is a stalk-local property. This talk presents a joint work with Michal Hrbek and Rongmin Zhu.

主讲人简介:

胡江胜,博士毕业于南京大学,师从丁南庆教授,现为杭州师范大学教授。主要从事同调代数与代数表示理论等领域的研究,研究领域涉及逼近理论、高维同调理论、Gorenstein同调理论与模型范畴理论等。多次在一些有影响的国际国内会议上作大会报告。主持国家自然科学基金面上项目、数学天元基金项目、青年项目等科研项目多项。在Israel J. Math.,Canad. J. Math., Quart. J. Math.,J. Algebra,J. Pure Appl. Algebra,Sci. China Math.等国内外著名数学期刊上发表学术论文30余篇。

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