Comments (3)
An ANU student is developing the theory of combinatorial games. This will build off the beginning of the current surreal file (ordering, negation, addition), but does not go in the direction that Reid indicated above (arithmetic on surreal
itself).
from mathlib.
The first batch of work on combinatorial games, by Isabel Longbottom, Reid, and myself has landed in mathlib as b41277c. This was mostly about games, rather than surreals, but it has pushed things along to proving add_semigroup surreal
.
from mathlib.
As I've mentioned to what feels as everyone in Zulip, I've done a large amount of progress proving that surreal multiplication is well-defined. Currently there's a bunch of large PRs that are blocking my progress, but I think that in approx 1 month I should have the proof produced.
from mathlib.
Related Issues (20)
- Refactor bilinear forms
- evaluate `int.floor` and `int.fract` with `norm_num` HOT 2
- Lean is unable to infer `ordered_smul` instance from `pi.ordered_smul'` HOT 1
- Basics of tempered distributions HOT 1
- backport remove with_cases
- backport remove `@[ext foo]`
- Diamond of complete boolean algebras on sets
- Generalize `lower_semicontinuous_supr` and variations to *conditionally* complete linear orders
- `polyrith` fails if expression is an equality of numerals
- Lean 3.49.0 compatibility HOT 6
- Q: LLM and/or an RL agent trained on mathlib and tests HOT 1
- Renaming `interval_oc` and `Ι a b` HOT 4
- `(a :: l ++ [b]).last'` does not simplify to `some b`
- mathlib/src/group_theory/presented_group.lean
- The Shapley-Folkman lemma HOT 2
- The ring of integers of a number field `K` is free of dimension `[K : ℚ]` / develop the theory of lattices HOT 3
- Tracking: attribute semireducible/irreducible
- Use a sensible sort order in multiset.repr
- Link broken HOT 1
- Proof that the unit group of a number field is finitely-generated HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from mathlib.