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Timeline for answer to What does the word "let" mean in mathematics? by Zhen Lin

Current License: CC BY-SA 4.0

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Jul 21, 2025 at 15:03 comment added N. Virgo @QiaochuYuan the idea is explored at length in Jacobs' Categorical Logic and Type Theory, though it's not the world's easiest book to read.
Jul 20, 2025 at 22:41 comment added Qiaochu Yuan This is helpful, thanks! The idea of implementing introducing a new variable via pullback is new to me, that's nice.
Jul 20, 2025 at 22:13 history answered Zhen Lin CC BY-SA 4.0