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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…
fpfu updated
2 months ago
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(Order may change) Always assume that replace our implementation with existing theorems if already exist
1. Preliminaries
- [x] `RationalFunc.lean` -> `FieldTheory/RatFunc/Basic.lean`? (#45) -> …
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Sometimes, we want to cross-reference theorems, examples, and problems. These can be referenced in the same way as equations---no caption is needed. We prefer to use the same syntax as equations. Plea…
eraus updated
9 months ago
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### References
- [Note Reference](http://www.stat.columbia.edu/~bodhi/Talks/Emp-Proc-Lecture-Notes.pdf)
- [Lecture Reference](https://youtu.be/8i2UaAwAy_s?list=PL3k7R4W9YIQRz_0gH_9TKjLjL600v8cd9)
…
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`EVERY2` and `LIST_REL` are the same constant (one is an overload for the other). But several theorems use "EVERY2" in their name, which makes it hard to find theorems about "LIST_REL" if one only kno…
xrchz updated
4 years ago
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Please forgive me if this has already been mentioned in previous issues.
MathSE has a link that mentions the proof that the Sorgenfrey line is not LOTS: https://math.stackexchange.com/questions/160…
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Hey @tirix
I have formalised the following theorem, which I will be opening a pr once the current pr is merged.
```
aks4d1p3.1 $e |- ( ph -> N e. ( ZZ>= ` 3 ) ) $.
aks4d1p3.2 $e |- A = ( …
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There are many different lists, few of which are maintained.
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As an example, see Theorem 6.96 (Fall 2017)
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(The "finer" of the title has to be read as the opposite of "coarser".) There are a few sections in set.mm where several definitions are introduced "en masse", and then their properties proven altoge…