The designer prefers using mathptmx font for the book, but I really dislike its greek characters. They are larger and bolder than non-greek characters. Do you have any suggestion how to please both the designer and myself? :-)

Maybe you could suggest another font that looks like Times (New) Roman and does not have this "problem" with greek characters'? Math support is essential.

txfontsornewtxtext/newtxmathis suitable. – Leo Liu Oct 21 '13 at 11:18txfonts.newtxtextis perhaps the last resort, it has funny integral signs... – Pygmalion Oct 21 '13 at 11:21