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「285G, Lecture 3: The maximum principle, and the」：数学直觉如何落到可检验的步骤
We now begin the study of (smooth) solutions to the Ricci flow equation …
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「Please help support mathematics at the Universit」笔记：问题从哪来、证明卡在哪
I usually try to keep political issues out of this blog, and I certainly…
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把「285G, Lecture 4: Finite time extinction of the s」写成可执行的阅读路径
Returning (perhaps anticlimactically) to the subject of the Poincaré con…
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「285G, Lecture 5: Finite time extinction of the t」笔记：问题从哪来、证明卡在哪
In the previous lecture, we saw that Ricci flow with surgery ensures tha…
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「On the permanent of a random Bernoulli matrix」笔记：问题从哪来、证明卡在哪
Van Vu and I have just uploaded to the arXiv our preprint “On the perman…
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「285G, Lecture 6: Finite time extinction of the t」：数学直觉如何落到可检验的步骤
In this lecture we discuss Perelman’s original approach to finite time e…
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「A draft version of the blog book」笔记：问题从哪来、证明卡在哪
A few months ago, I announced that I was going to convert a significant …
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「285G, Lecture 7: Rescaling of Ricci flows and κ-」：数学直觉如何落到可检验的步骤
We now set aside our discussion of the finite time extinction results fo…
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读懂「285G, Lecture 8: Ricci flow as a gradient flow,」：先把定义、反例和适用范围钉死
It is well known that the heat equation (1) on a compact Riemannian mani…
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读懂「Pearls before breakfast, II」：先把定义、反例和适用范围钉死
Over a year ago, I had a brief post here pointing out Gene Weingarten‘s …