Why the 4-Color Theorem is Easier to Prove on a Torus - A Mathematical Analysis

Why the 4-Color Theorem is Easier to Prove on a Torus - A Mathematical Analysis

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Introduction

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1 of 7

Introduction

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Why the 4-Color Theorem is Easier to Prove on a Torus - A Mathematical Analysis

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  1. 1 Introduction
  2. 2 Degree sum = 2E
  3. 3 3F ≤ 2E
  4. 4 The proof - minimal example
  5. 5 Combining inequalities
  6. 6 Is the bound sharp?
  7. 7 My #SoMEpi favourites

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