[Tex/LaTex] Change Font Weight in Math Mode

fontsmath-mode

I would like to change the font "thickness" of the font in math mode. I already tried to find a similar method like \DeclareMathSizes but i didn't find something.

edit:
I want to use – if possible – in math mode a font with serifs that is not as thin as the "typical" one. Since I'm trying to include latex formulas in powerpoint I need them for a presentation and, thus, a thicker font would be great.
P.S.: To the best of my knowledge, I'm using pdflatex 😉

Thanks for your help

Best Answer

With standard fonts you can switch to bold mathematics via \mathversion{bold}:

Sample bold switching

\documentclass{article}

\begin{document}

A mathematical test \( E = mc^2 \) and \( \int_0^1 \alpha(t)\,dt =
2\pi/3 \).  Here something that is already bold \(
\mathbf{x}\cdot\mathbf{y} = 1 \).

\mathversion{bold}

A mathematical test \( E = mc^2 \) and \( \int_0^1 \alpha(t)\,dt =
2\pi/3 \).  Here something that is already bold \(
\mathbf{x}\cdot\mathbf{y} = 1 \).

\end{document}

Alternatively consider using a different font set-up. One is provided by the fourier package:

Sample fourier

\documentclass{article}

\usepackage{fourier}

\begin{document}

A mathematical test \( E = mc^2 \) and \( \int_0^1 \alpha(t)\,dt =
2\pi/3 \).  Here something that is already bold \(
\mathbf{x}\cdot\mathbf{y} = 1 \).

\end{document}

Have a look at the LaTeX font catalogue for samples of other fonts with math support.

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