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\cdot is defined by \DeclareMathSymbol{\cdot}{\mathbin}{symbols}{"01} So you just need to put this in your preamble \DeclareMathSymbol{*}{\mathbin}{symbols}{"01}


A math atom has three fields: the base, the subscript and the superscript. When you attach a subscript or superscript to a symbol, it doesn't lose its type. So the whole \otimes_{K} (the braces could be omitted here, because the subscript has just one token) is considered as a Bin atom. Thus with U \otimes_{K} V you get the sequence [U]Ord [medium ...


Let's see what Ellen Swanson in page 20 of her classic Mathematics into Type has to say about this:


If you insist on not changing the body of your source, you could make * math-active \documentclass{article} \mathcode`\*="8000 % {\catcode`\*=\active\gdef*{\cdot}} \begin{document} Here we have some asterisks: * * * * * Now we some some mathematics: $a*b*c$. \end{document}


A picture is worth a thousand words: I have attached a picture alongside its generating code for comparison. You can click on the image for a bigger view (nice feature new to TeX.SX). Paying a close look, you observe a perfect alignment between first and fourth expressions where both come from mathmode. The second nearest is the third, then comes the ...


You can just look in stix.sty and extract the definition for any character: \documentclass{article} \DeclareFontEncoding{LS1}{}{} \DeclareFontSubstitution{LS1}{stix}{m}{n} \DeclareSymbolFont{arrows1} {LS1}{stixsf} {m} {n} \DeclareMathDelimiter{\DDownarrow} {\mathrel}{arrows1}{"FF}{arrows1}{"FF} \begin{document}\showoutput \[\alpha + \sum x_i ...


Seems to be \mathfrak{X} from the amssymb package. You can find this out yourself using http://detexify.kirelabs.org/classify.html.


\documentclass{article} \usepackage{mathtools} \begin{document} There are many ways to enter maths mode. \begin{equation} \text{equation} = \text{one way} \end{equation} but \[ \text{equation} \not\equiv \text{maths mode} \] If $\{x_1,...,x_n\} = \{\text{ways}\}$ then $n \equiv \text{many}$. \end{document}


Something like The symbols are obtained through these definitions (need graphicx package): \newcommand{\bigsqsubset}{\mathrel{\text{\scalebox{1.5}{$\sqsubset$}}}} \newcommand{\bigsqsupset}{\mathrel{\text{\scalebox{1.5}{$\sqsupset$}}}} MWE: \documentclass{article} \usepackage{amsmath,amssymb} \usepackage{graphicx} ...


I'm not sure what's the meaning of this, but you can try with relsize: \documentclass{article} \usepackage{amssymb,relsize} \newcommand{\fancybrackets}[1]{% \mathopen{\mathlarger{\mathlarger{\sqsubset}}}% #1% \mathclose{\mathlarger{\mathlarger{\sqsupset}}}% } \begin{document} $\fancybrackets{G_{n}}$ \end{document}


In the next version of unicode-math there'll be an interface for this: \setmathfontface\mathfoo{texgyrechorus-mediumitalic.otf} \setoperatorfont\mathfoo Please speak up if you think there might be a better way to do this :)

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