What it says is if s is a closed surface — Remember, it is the same as with Green's theorem, we need to have something that is completely enclosed.

它说的是，如果s是一个封闭曲面，这和格林定理是一样的，我们需要完全封闭的。

youdao

The sensation of working on a theorem, he says, can be like being “a hunter and gatherer of mathematical concepts.”

他说，专注于一个定理的感觉，就像“一个猎人，一个数学概念的收集者。”

youdao

The most complicated part, Devlin says, is our good old friend the Pythagorean theorem.

Devlin说，最复杂的部分便是我们熟知的毕达哥拉斯定理。

youdao

The theorem says that the distribution of property rights, provided they are clearly assigned and transactions costs are low, has no effect on economic efficiency, because people can negotiate their way to the efficient position.

ECONOMIST: The world is not converging on a single kind of capitalism