Talk:Chow's lemma
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This proof has serious issues
[edit]First, the proof that cover has an error: the claim is made that , while isn't a function between the same objects as , so the claim that is projective (one of two key steps in the proof!) does not follow from what is written on this page. Next, and are both undefined but play a crucial role in the end of the proof. Additionally, the "diagram chase" that concludes the proof would be much more understandable if there was a diagram furnished - relying on the reader to draw it themselves is pedagogical malpractice. This proof needs major rewriting in order to be correct and comprehensible. Kreiser math (talk) 17:27, 28 August 2020 (UTC)
I've attempted to fix the proof. Please leave any comments or suggestions for further improvement here. Kreiser math (talk) 00:24, 17 February 2021 (UTC)