1. Introduction

2. MUSE data set
2.1. Hubble Deep Field South
2.2. Ultra Deep Field-Mosaic
2.3. Ultra Deep Field-10

3. Detection of close galaxy pairs

4. Stellar mass estimates and close pair classification

5. Redshift evolution of the galaxy major merger fraction
5.1. Redshift bins
5.2. Major merger fraction up to z≈6
5.3. Separation by stellar mass
5.4. Comparison with recent simulations

6. Summary and conclusions