Value of recommendation letters from professors in a different field I will be a second year math under-grad in September, and currently doing an internship at applied math research institute. However, my interest after my bachelors is to do PhD in pure math at a top math school. My question is:

How important would the recommendation letters from my current supervisors be while I apply to grad school? (Note: My supervisors are very active in their field of research, but are not quite famous.)
Recommendation letters may also represent soft skills. Hence, they are important. Your personality is independent from your field of study, so there is little point in withholding recommendation letters - indicating what kind of person you are - to future supervisors (or committees) if you are going to spend the next 3-4 years working in a team or with a supervisor on a project.

Source: PhD Student