I'd like to use the upper integral symbol \upint. Since by default this symbol is not defined, I'd like to use the XITS font in a LaTeX document. When using the STIX font one could simply




doesn't work. I tried using unicode-math but it doesn't work with pdflatex.

/edit: I found \upint in the mathop section of this document: ftp://ftp.nsu.ru/mirrors/ftp.dante.de/tex-archive/macros/latex/contrib/unicode-math/unimath-symbols.pdf Does it mean that I can use the \upint unicode symbol without an explicit usepackage?

  • 2
    \usepackage[upint]{stix} – egreg Apr 16 '16 at 17:55

You can use the upint option for stix:



With the \texttt{upint} option, the integral is not
\int f(x)\,dx
There are \verb|\intup| and \verb|\intsl|, but the
package documentation recommends sticking to
\intsl f(x)\,dx


enter image description here

If you just want the symbols while keeping the fonts, you can do like this:



\DeclareMathSymbol{\intop}  {\mathop}{integrals}{"AF}
\DeclareMathSymbol{\iintop} {\mathop}{integrals}{"B0}



\int f(x)\,dx + \int_a^b f(x)\,dx + \iint\limits_D f(x,y)\,dx\,dy


enter image description here

| improve this answer | |
  • Yes but this option changes the whole font of my document which I'd like to avoid. Or at least try another font – marmistrz Apr 16 '16 at 18:00
  • @marmistrz You didn't say so: \usepackage{stix} chooses Times. I added the code for importing just the integrals. – egreg Apr 16 '16 at 19:20
  • what do the extra commands mean? Can you comment them please? – marmistrz Apr 16 '16 at 20:22
  • @marmistrz See tex.stackexchange.com/questions/14386/… – egreg Apr 16 '16 at 21:00

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