This is a formalization of the surreal numbers in the Lean theorem prover. The class of surreal numbers is an infinite-dimensional real division algebra, which is also an ordered field.
To start, run:
lake exe cache getA formalization in Lean of the maths from the books: "Mantova, Matusinski: Surreal Numbers with Derivation", "Conway: On Numbers and Games", "Gonshor: An introduction to the theory of surreal numbers"
This is a formalization of the surreal numbers in the Lean theorem prover. The class of surreal numbers is an infinite-dimensional real division algebra, which is also an ordered field.
To start, run:
lake exe cache getA formalization in Lean of the maths from the books: "Mantova, Matusinski: Surreal Numbers with Derivation", "Conway: On Numbers and Games", "Gonshor: An introduction to the theory of surreal numbers"