Mathematics in Lean

• 1. Introduction
  • 1.1. Getting Started
  • 1.2. Overview
• 2. Basics
  • 2.1. Calculating
  • 2.2. Proving Identities in Algebraic Structures
  • 2.3. Using Theorems and Lemmas
  • 2.4. More on Order and Divisibility
  • 2.5. Proving Facts about Algebraic Structures
• 3. Logic
  • 3.1. Implication and the Universal Quantifier
  • 3.2. The Existential Quantifier
  • 3.3. Negation
  • 3.4. Conjunction and Bi-implication
  • 3.5. Disjunction
  • 3.6. Sequences and Convergence
• 4. Sets and Functions
  • 4.1. Sets
  • 4.2. Functions
  • 4.3. The Schröder-Bernstein Theorem
• 5. Number Theory
  • 5.1. Irrational Roots
  • 5.2. Induction and Recursion
  • 5.3. Infinitely Many Primes
• 6. Topology
  • 6.1. Filters