TypeTopology
Logical manifestations of topological concepts, and other things, via the univalent point of view. (by martinescardo)
mathlib4
The math library of Lean 4 (by leanprover-community)
TypeTopology | mathlib4 | |
---|---|---|
1 | 10 | |
212 | 908 | |
- | 25.3% | |
9.8 | 10.0 | |
about 16 hours ago | about 13 hours ago | |
Agda | Lean | |
GNU General Public License v3.0 only | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
TypeTopology
Posts with mentions or reviews of TypeTopology.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-06-13.
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Are There People Doing Formal Math In Berlin?
I just wonder if there are any irl meetups of people involved with formalizing mathematics, I thought that it would be a cool hobby to pick up (with some background in math and programming) but the existing libraries, like MathLib, TypeTopology or UniMath look a bit intimidating...
mathlib4
Posts with mentions or reviews of mathlib4.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-11-06.
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A Linear Algebra Trick for Computing Fibonacci Numbers Fast
We essentially implemented this matrix version in Lean/mathlib to both compute the fibonacci number and generate an efficient proof for the calculation.
https://github.com/leanprover-community/mathlib4/blob/master...
In practice this isn't very useful (the definition of Nat.fib unfolds quick enough and concrete large fibonacci numbers don't often appear in proofs) but still it shaves a bit of time off the calculation and the proof verification.
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Show HN: The first complete open source implementation of Turing's famous paper
As an aside, there are a number of Turing machines defined in Lean's mathlib. https://github.com/leanprover-community/mathlib4/blob/2c3ee3...
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Lean 4.0.0, first official lean4 release
Thanks,
and there is Subobject, which looks like the subobject classifier.
https://github.com/leanprover-community/mathlib4/blob/master...
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Are There People Doing Formal Math In Berlin?
I just wonder if there are any irl meetups of people involved with formalizing mathematics, I thought that it would be a cool hobby to pick up (with some background in math and programming) but the existing libraries, like MathLib, TypeTopology or UniMath look a bit intimidating...
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Good First Formal Proof?
What is a good proof in either unimath or mathlib4 or somewhere else to get started with formal proofs? Like some well known result without too many dependencies, but still nothing trivial like propositional logic?
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Functional Programming in Lean – a book on using Lean 4 to write programs
For searching using search terms for theorems in mathlib, there is the mathlib documentation page (for Lean 3 https://leanprover-community.github.io/mathlib_docs/ and Lean 4 https://leanprover-community.github.io/mathlib4_docs/). To find theorems by type, I find the best way is to use the `library_search` tactic from inside Lean itself.
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Good Entry Points For `mathlib4`?
Hello, I'd like to start learning Lean 4. I'm already reading the book, but I'm really curious to study real-life parallel. So I looked into mathlib4, but there seem to be a lot of dependencies between the the files. So I wonder the following:
What are some alternatives?
When comparing TypeTopology and mathlib4 you can also consider the following projects:
Agda - Agda formalisation of the Introduction to Homotopy Type Theory
lean4 - Lean 4 programming language and theorem prover