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Freek's list is weird and arbitrary, and although it is widely used as a benchmark by libraries of formalized mathematics and therefore it is important to track it on our library.
However, it would…
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### Prerequisites
Please put an X between the brackets as you perform the following steps:
* [X] Check that your issue is not already filed:
https://github.com/leanprover/lean4/issues
* …
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> @danflapjax @StevenClontz Sorry I did not have the chance to comment. But I don't think this change is an improvement.
> I agree it is in general preferable to use "true" properties in theorems…
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Hi everyone, I will be soon back from summer holiday, and I would like to add the following theorems:
$\bullet$ ~empty + completely metrizable + ~has an isolated point $\Rightarrow$ ~cardinality $<…
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I suggest moving things from codu to [odubas](https://us.metamath.org/mpeuni/odubas.html) to the beginning of part 9 (potentially making it a new 9.1), and the remaining of “9.2.3 The dual of an order…
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I have compiled this list of **100 new theorems to prove using mathlib4**. Some of these (like the Feit–Thompson theorem) have already been proved in other proof assistants, but that is largely irrele…
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It would be nice to be able to prove a theorem that is not an equality and interpret it as a rewrite rule that replaces instances of the theorem by `True`.
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Distinguish axioms from theorems in the BFO FOL. I've code that tries to prove each formula from the rest. Take the ones that are proven and mark them as theorems.
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https://github.com/sahasatvik/typst-theorems/blob/5775ea03601a9212d143569e3bba80ebe5422b17/theorems.typ#L109
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# Review: Theorems for Free :: Reasonably Polymorphic
[https://reasonablypolymorphic.com/blog/theorems-for-free/](https://reasonablypolymorphic.com/blog/theorems-for-free/)