My text is in Persian/Kurdish and therefore I use a different font for the text and the font has different characteristics like height, I just want to change the font size that is used in Math mode. I want to add some statements perhaps in the preamble affecting the whole document.

  • Can you add a small example of code? Perhaps scaling the main font is simpler than scaling math.
    – egreg
    Feb 25 '16 at 10:59

LaTeX has a \DeclareMathSizes command to specify the math font sizes, by default this is




says 10pt text font should use 10pt math font and 7pt in scripts and 5pt in scriptscript size


would make the math use 9pt 7pt and 6pt for a 10pt text font.

  • What about the others (\DeclareMathSizes{\@xivpt}{\@xivpt}{\@xpt}{7} for instance)? What do those macros stand for? I couldn't find any documentation for those.
    – Andyc
    Apr 19 at 21:57
  • 1
    @Andyc see latex.ltx (or source2e.pdf) they are just shorthands for 14pt (actually 14.4pt) and 10pt respectively. they saved a few bytes in the 1980s when every byte mattered but no need to use them if specifying new sizes. Apr 19 at 22:36

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