重磅！6位基础科学终身成就奖得主领衔主讲基础科学报告

　　2025国际基础科学大会开幕暨颁奖典礼后，400余位国际顶尖科学家将与近千名海内外优秀学者、青年学子共聚北京雁栖湖应用数学研究院，展开为期两周的深度学术交流，共探基础科学最前沿。

　　7月14日-15日，6位2025基础科学终身成就奖得主——诺贝尔奖得主丁肇中（Samuel Chao Chung Ting）、朱棣文（Steven Chu）、戴维·乔纳森·格罗斯（David Jonathan Gross）,图灵奖得主罗伯特·恩德雷·塔扬（Robert Endre Tarjan）、菲尔兹奖得主森重文（Shigefumi Mori）以及沃尔夫奖得主乔治·卢斯蒂格（George Lusztig）将在大会期间带来精彩的基础科学报告。

　　时间：7月15日 上午8:30-9:30

　　地点：BIMSA-A2 报告厅

　　题目：From the Hartshorne Conjecture to the Minimal Model Program

　　摘要：I am grateful to the ICBS for awarding the Basic Science Lifetime Award to me. On this occasion, I would like to explain how I contributed to the birational algebraic geometry, especially during the period from the 2-dimensional Minimal Model Program (MMP) and the Hartshorne Conjecture during the 1970s to the 3-dimensional MMP during the 1980s. The Hartshorne Conjecture (1970) or its differential geometric counterpart, the Frankel Conjecture (1961), is a special problem to characterize algebraic varieties which are positively curved in the strongest sense in Differential Geometry. The MMP, in contrast, is a general problem to birationally transform an algebraic variety into one with a certain simpler structure, which was not considered possible in dimension 3 or higher in the 1970s. After a partial result in the 3-dimensional case with H. Sumihiro in 1978, I solved the general case of the Hartshorne Conjecture by a method now called the Bend-and-Break in 1979, while the Frankel Conjecture was also solved by Y.T. Siu and S.T. Yau around the same time. My solution drew my attention to a certain weaker notion of being positively / negatively curved, since it did not use the full curvature assumption. In terms of this measure of positive/negative curvature, I could show in 1982 that an algebraic variety X is usually "non-positively curved" and if otherwise, there is a clear geometric reason, that is, the theory of extremal rays. In the former case X is called a minimal model, while in the latter it suggested that there might exist some conjectural procedure called the MMP to transform X into a minimal model or a variety with a Fano fibering. The MMP was soon formulated and developed by several people including M. Reid, Y. Kawamata, V. Shokurov, and J. Kollár on the basis of extremal rays and the notion of terminal/canonical singularities introduced by Reid. As for myself, I became attracted to a birational map called a flip and devoted myself to its computations around 1981 - 1987, which eventually resulted in the proof of the existence of flips in 1988. These altogether established the MMP for 3-dimensional varieties with terminal singularities. Later the MMP was vastly developed by C. Birkar, P. Cascini, C. Hacon, J. McKernan, and others. However these are beyond the scope of my presentation. Instead, I would like to touch if time permits on my joint work with Y. Prokhorov on our ongoing project to understand the 3-dimensional extremal contractions as explicitly as the surface case.

　　时间：7月15日 上午10:50-11:50

　　地点：BIMSA-A2 报告厅

　　题目：My Life with Data Structures

　　摘要：This talk will be a historical survey of the speaker's work on the design and analysis of efficient algorithms and data structures. The talk will examine both general approaches, including the related concepts of amortization, self-adjustment, and competitiveness, and specific data structures, including compressed trees, splay trees, and efficient heaps.