1 INTRODUCTION

2 SN AND HOST GALAXY DATA  
2.1 SN Ia distance estimation  
2.2 SN Ia Host Galaxy Data  

3 SN IA PROPERTIES AS A FUNCTION OF HOST GALAXY PROPERTIES  
3.1 Correlating SN and host galaxy properties  

4 THE MASS STEP IN DES3YR  
4.1 Comparison to Brout et al. (2019b)  

5 SIMULATING THE MASS STEP  
5.1 Simulations of DES-SN  

6 SUMMARY AND CONCLUSIONS