#3881 OS Programming Language Lean4
#3881 Open Source Programming Language Lean4 Lean4: How the theorem prover works and why it's the new competitive edge in AI https://venturebeat.com/ai/lean4-how-the-theorem-prover-works-and-why-its-the-new-competitive-edge-in #3881 Tell me about Lean4 Lean 4 is a significant evolution in the world of formal methods because it attempts to solve a longstanding "two-language problem." In most other systems, you write proofs in one language (like Coq or Isabelle) but the tool itself is written in another (like OCaml or ML), making it hard for users to extend the tool. Lean 4 is a self-hosted theorem prover and a general-purpose functional programming language . 1 This means it is written in Lean 4 itself, compiling down to efficient C code. Here is an analysis of Lean 4 tailored to your background as a programmer and process engineer. 1. The Core Concept: "Everything is an Expression" Lean is based on Dependent Type Theory (specifically the Calculus of Inductiv...