I am preparing a grant application for personal funding to carry out a 3-year project. The topic is in the field of computational condensed matter, and the work will focus on i) method development, ii) computational implementation, and iii) application of method/code to interesting systems.
I think it's easier to bring across some points by (light) use of equations, but I'm not sure if the reviewers will frown upon it. The committee members should be either experts in the particular subfield or at least fairly familiar with it (i.e., it's not a multidisciplinary committee).
This website for instance states that
[...] the best proposals contain no equations at all!
So, is it a good idea to include equations in a research proposal or should I strive to avoid them?