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hat{} and tilde{} commands result in misaligned accents with bold math symbols

TeX - LaTeX Asked by JD80121 on June 18, 2021

I would like to use accents on bold characters in math equations with the Utopia font. It appears that the accent is not properly shifted to the left when using hat{mathbf{x}} for example. Using mathbf{hat{x}} does not give good results either.

Here is the MWE:

documentclass{article}

usepackage{fourier-otf}

begin{document}

begin{align*}
    X quad hat{X} &qquad x quad hat{x} 
    mathbf{X} quad hat{mathbf{X}} &qquad mathbf{x} quad hat{mathbf{x}} 
    mathbf{X} quad mathbf{hat{X}} &qquad mathbf{x} quad mathbf{hat{x}}
end{align*}

end{document}

and the result that I get:

enter image description here

A similar issue was reported here with the STIX2 font. The problem was related to the version of the font used but I don’t know if this could be the issue here. According to tlmgr, the version of the fourier package is 54090 (2.2).

I can get properly aligned accents if I load fourier instead of fourier-otf, but this results in many other issues in my text related to font encoding.

Is there a simple way to make the accents work with bold maths?

One Answer

You asked,

Is there a simple way to make the accents work with bold maths?

Short answer: Yes. :-)

Slightly longer answer: Replace all instances of mathbf with symbf.

enter image description here

Please see sections 3.1, "New Commands", and 4.4, "Legacy 'maths' alphabet commands", of the user guide of the unicode-math package for more information on the differences between mathbf and symbf (as well as mathit vs. symit, mathup vs. symup, mathrm vs. symrm, and mathsf and symsf).

documentclass{article}
usepackage{fourier-otf}
begin{document}
begin{align*}
X quad hat{X} &qquad x quad hat{x} 
symbf{X} quad hat{symbf{X}} &qquad symbf{x} quad hat{symbf{x}} 
symbf{X} quad symbf{hat{X}} &qquad symbf{x} quad symbf{hat{x}}
end{align*}
end{document}

Correct answer by Mico on June 18, 2021

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