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6

This will produce symbols with the same vertical size as \sum in any style and with any font size; any math alphabet can be used. For a commonly used symbol, define a specific command, as I did for \Rop. \documentclass{article} \usepackage{amsmath,graphicx,amssymb} \usepackage{dsfont} % for the example \makeatletter ...


4

This does the job nicely I think (thanks karlkoeller for suggesting improvements): \documentclass[a4paper]{article} \pagestyle{empty} \usepackage{amsmath,amsfonts,relsize,graphicx,dsfont} \makeatletter \newcommand*\smallR{\mathds{R}} % <-- this is your symbol \newcommand*\yo@bigR[2]{\text{#2\raisebox{-#1ex}{$\smallR$}}} ...


1

Employing a variation of my answer at Integral Sign $\int...$, I define a new operator \uint and show the comparison to \int in the MWE below. This approach takes a traditional \scriptstyle integral sign, rotates it 8 degrees, and scales it up to the same vertical extent as a normal integral sign when employed in the current mathstyle. ...


2

With Lua- or XeLaTeX you can use the package unicode-math and substitute single symbols easily. Just download any font you like and use it like: % arara: lualatex \documentclass{article} \usepackage{unicode-math} \setmathfont{Latin Modern Math} \setmathfont[range="222B]{Linux Libertine O} % or any font you like \begin{document} ...


1

You can do similarly to what the LaTeX kernel does for \int: % fontmath.ltx, line 268: \DeclareMathSymbol{\intop}{\mathop}{largesymbols}{"52} \def\int{\intop\nolimits} This exploits the fact that after an Op atom you can have as many \limits, \nolimits or \displaylimits commands as you want and the last one wins. With amsmath there are more features. ...



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