fontsmath-moderoman
I'm not a fan of italics in math mode, is there a way to make all my math upright?
When using the MinionPro package, I'm quite happy with the frenchmath option, which I believe turns all greek letters and all upper-case latin letters upright. Is there a way to do this using the, perhaps more standard, amsmath package?
Just break your \setmainfont into two lines, and you should have separate control over Greek and Latin. E.g., to get Latin in italics and upright Greek:
\setmathfont(Digits,Latin)[Uppercase=Italic,Lowercase=Italic]{Minion Pro}
\setmathfont(Greek)[Uppercase=Regular,Lowercase=Regular]{Minion Pro}
(Reverse the options if you want upright Latin and italic Greek.)
Or maybe I just didn't understand what you were trying to do.
You don't need the isomath package:
\DeclareMathSymbol{\Gamma}{\mathalpha}{operators}{0}
\DeclareMathSymbol{\Delta}{\mathalpha}{operators}{1}
\DeclareMathSymbol{\Theta}{\mathalpha}{operators}{2}
\DeclareMathSymbol{\Lambda}{\mathalpha}{operators}{3}
\DeclareMathSymbol{\Xi}{\mathalpha}{operators}{4}
\DeclareMathSymbol{\Pi}{\mathalpha}{operators}{5}
\DeclareMathSymbol{\Sigma}{\mathalpha}{operators}{6}
\DeclareMathSymbol{\Upsilon}{\mathalpha}{operators}{7}
\DeclareMathSymbol{\Phi}{\mathalpha}{operators}{8}
\DeclareMathSymbol{\Psi}{\mathalpha}{operators}{9}
\DeclareMathSymbol{\Omega}{\mathalpha}{operators}{10}
To get an italic Gamma, use \mathnormal{\Gamma}. Try
$\Gamma\mathnormal{\Gamma}\mathbf{\Gamma}$
The command \DeclareMathSymbol is used for assigning a meaning to characters or commands in math mode. The second argument contains the "kind" of symbol; \mathalpha means a symbol that obeys to the alphabet selection commands. The third argument is the alphabet used by default; the fourth is the slot in the font. All the standard declarations are in fontmath.ltx loaded at format creation time.
Notice that these declarations won't work if the default font encoding of the document is T1 instead of OT1, as operators refers to the ordinary Roman document font. One should define a new math alphabet, in this case.
How to do this when the document encoding is T1? One has to define a new symbol font:
\DeclareSymbolFont{otone}{OT1}{cmr}{m}{n}
\SetSymbolFont{bold}{otone}{OT1}{cmr}{m}{n}
\DeclareMathSymbol{\Gamma}{\mathalpha}{otone}{0}
\DeclareMathSymbol{\Delta}{\mathalpha}{otone}{1}
\DeclareMathSymbol{\Theta}{\mathalpha}{otone}{2}
\DeclareMathSymbol{\Lambda}{\mathalpha}{otone}{3}
\DeclareMathSymbol{\Xi}{\mathalpha}{otone}{4}
\DeclareMathSymbol{\Pi}{\mathalpha}{otone}{5}
\DeclareMathSymbol{\Sigma}{\mathalpha}{otone}{6}
\DeclareMathSymbol{\Upsilon}{\mathalpha}{otone}{7}
\DeclareMathSymbol{\Phi}{\mathalpha}{otone}{8}
\DeclareMathSymbol{\Psi}{\mathalpha}{otone}{9}
\DeclareMathSymbol{\Omega}{\mathalpha}{otone}{10}
Of course cmr can be changed into the document's main font family name, provided it contains Greek uppercase letters in its OT1 version; but it's just a matter of giving the correct slot numbers for the chosen font.
Best Answer
Another font family that you can try is
kpfonts. It is designed to be compatible withamsmath, and contains the option forfrenchstyle.