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is missing from the nLab column in the table.
https://ncatlab.org/nlab/show/abelianization
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**Description**
When I was running the lean4 example, I met an error in the function `_unmount_files` under `container.py`. The error is "Directory not empty". I tried to print the directory and foun…
OakYU updated
17 hours ago
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### Proposal
These three lines do this same computation:
https://github.com/leanprover/lean4/blob/f05a82799a01569edeb5e2594cd7d56282320f9e/src/Lean/Meta/SynthInstance.lean#L286
https://github.c…
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It seems at least `leanpkg test` doesn't exist on lean4 (yet?), so running this on a lean4 repository just fails immediately.
I had no expectations it'd work, but perhaps a first way to fix things …
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**Lean4**
Lean is a functional programming language that makes it easy to write correct and maintainable code. You can also use Lean as an interactive theorem prover.
**Additional resources**
* h…
ghost updated
6 months ago
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v4.6.0 から導入された機能
https://github.com/leanprover/lean4/releases/tag/v4.6.0
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https://lean-lang.org/lean4/doc/struct.html#default-field-values
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参考：https://lean-lang.org/lean4/doc/stringinterp.html
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### Prerequisites
* [x] Put an X between the brackets on this line if you have done all of the following:
* Check that your issue is not already [filed](https://github.com/leanprover/lean4/iss…
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A table based format for commands sorted by purpose seems a good fit for Lean 4's theorem prover syntax.
Resources:
https://djvelleman.github.io/HTPIwL/
and
https://leanprover-community.github.i…