*主持人：刘钢 教授

*讲座内容简介：
One major new birational geometry problem arising in understanding stable degeneration of varieties, which is the algebraic analogue to the compactness of K?hler-Einstein type metrics, is finite generation for valuations of higher rational rank. In the past a few years, we have established finite generation for minimizing valuations of various functionals, by first showing those minimizers are ‘special’; and then proving any special valuation satisfies finite generation. In this talk, I will report results along this direction. (Based on joint work with Yuchen Liu and Ziquan Zhuang).

*主讲人简介：
许晨阳，普林斯顿大学数学系教授，从事基础数学代数几何方向研究。因为杰出学术贡献，获得杰青，拉马努金奖，新视野奖，美国数学会代数学科尔奖，未来科学大奖等一系列国内外重要荣誉。