[Tex/LaTex] Adjust vertical position of single character in WordPress’ Latex

vertical alignment

I'm trying to define a new operator (like \bigominus — but it doesn't exist) to create an equation like

But the problem is that I can't shrink the lower indices after vertical aligning everything that follows. The code I have so far is

\mathop{\huge{\boldsymbol{\ominus}}}\limits_{\tiny{ijk}}\normalsize{\raisebox{0.7ex}{\text{x}[\,u\,][\,v\,][\,w\,]}}

If I remove \raisebox{0.7ex}{} it fixes the indices, but then the vertical alignment is gone.

Obviously it's noticeable with respect to the horizontal line of the symbol. Does anyone know how I may fix this? I would like to either move the \ominus symbol down so that the horizontal line is aligned with the cross of the \text{x}, or the \text{x} and everything that follows so that it aligns with the horizontal line of the \otimes.

I've spent a few hours trying to solve this problem but I cannot seem to find the right command in the rather limited available set from WordPress.

Best Answer

You can scale a bold \ominus; whether this works in WordPress I don't know, but it would be off-topic, because WordPress uses MathJax that's not TeX.

\documentclass{article}
\usepackage{amsmath,bm,graphicx}

\makeatletter
\newcommand*{\bigominus}{\DOTSB\bigominus@\slimits@}

\newcommand{\bigominus@}{\mathop{\mathpalette\bigominus@@\relax}}

\newcommand{\bigominus@@}[2]{%
  \vcenter{\hbox{%
    \sbox\z@{$\m@th#1\bigoplus$}%
    \resizebox{\wd\z@}{!}{$\m@th#1\bm{\ominus}$}%
  }}%
}
\makeatother

\begin{document}
\[
\bigominus_{ijk}x[u][v][w]
\qquad
\textstyle
\bigominus_{ijk}x[u][v][w]
\qquad
\scriptstyle
\bigominus_{ijk}x[u][v][w]
\qquad
\scriptscriptstyle
\bigominus_{ijk}x[u][v][w]
\]
\[
\bigoplus_{ijk}x[u][v][w]
\qquad
\textstyle
\bigoplus_{ijk}x[u][v][w]
\qquad
\scriptstyle
\bigoplus_{ijk}x[u][v][w]
\qquad
\scriptscriptstyle
\bigoplus_{ijk}x[u][v][w]
\]

\end{document}

Related Solutions

[Tex/LaTex] Aligning image and text on top, with minipages

Here's a nifty way to do it:

\documentclass{article}

\usepackage[demo]{graphics}

\begin{document}

\begin{tabular}{p{5cm} p{7cm}}
    \vspace{0pt} 
    \includegraphics{test}
    & 
    \vspace{0pt}
    He was an Austrian physicist famous for his founding contributions in the fields of
    statistical mechanics and statistical thermodynamics. He was one of the most
    important advocates for atomic theory at a time when that scientific model was 
    still highly controversial.\\
\end{tabular}

\end{document}

What happens here is that you change the reference point of the image with the \vspace{0pt}, which allows top aligning the the text and the image.

When you want to use \paragraph to style the name, the vertical spacing is still broken. Hopefully somebody will shed some extra light how to fix that (I found that using \vspace{-3ex} before the text seems to do the job).

Disclaimer: I used the idea of Stefan Kottwitz from this blog post, and rephrased his explanation. That's why this is a CW answer.

[Tex/LaTex] Bad vertical alignment with double-line inference rule

Three parameters to tune:

\eqgap distance between double rule lines;

\overgap separation between the text and the rules; and

\inferrulerule thickness of two rule lines.

This MWE shows it used in math mode, but it works outside of math mode, too. I don't know enough about inference rules to know, but if the math axis is aligned with the "denominator", then this MWE would work.

\documentclass{article}
\usepackage{stackengine}
\def\eqgap{.2ex}
\def\overgap{.4ex}
\def\inferrulerule{.2pt}

\newlength\rulelength
\newlength\toplength
\newlength\bottomlength

\newcommand\myinferrule[2]{%
  \stackMath%
  \setlength\bottomlength{\widthof{$#1$}}%
  \setlength\toplength{\widthof{$#2$}}%
  \ifdim\toplength>\bottomlength%
    \setlength\rulelength{\the\toplength}%
  \else%
    \setlength\rulelength{\the\bottomlength}%
  \fi%
  \mathrel{%
  \stackon[\overgap]{\stackon[\eqgap]{\stackon[\overgap]{#1}%
    {\rule{\the\rulelength}{\inferrulerule}}}%
    {\rule{\the\rulelength}{\inferrulerule}}}{#2}%
  }%
}
\begin{document}
\[
\mathrm{Math~Axis} \myinferrule{C \rightarrow C'}{C \rightarrow C_{\beta}}
\]
\end{document}

enter image description here

If the math axis is supposed to align with the rule, then this MWE would apply:

\documentclass{article}
\usepackage{stackengine}
\def\eqgap{.2ex}
\def\overgap{.4ex}
\def\inferrulerule{.2pt}

\newlength\rulelength
\newlength\toplength
\newlength\bottomlength

\newcommand\myinferrule[2]{%
  \stackMath%
  \setlength\bottomlength{\widthof{$#1$}}%
  \setlength\toplength{\widthof{$#2$}}%
  \ifdim\toplength>\bottomlength%
    \setlength\rulelength{\the\toplength}%
  \else%
    \setlength\rulelength{\the\bottomlength}%
  \fi%
  \mathrel{%
    \stackunder[\overgap]{%
      \stackon[\overgap]{%
        \stackanchor[\eqgap]%
          {\rule{\the\rulelength}{\inferrulerule}}%
        {\rule{\the\rulelength}{\inferrulerule}}%
      }{#2}%
    }{#1}%
  }%
}
\begin{document}
\[
\mathrm{Math~Axis} \myinferrule{C \rightarrow C'}{C \rightarrow C_{\beta}}
\]
\end{document}

enter image description here

With these parameters, the following

\[
\myinferrule{C \rightarrow C'}{C \rightarrow C_{\beta}} ~
\myinferrule{\scriptstyle C \rightarrow C'}{\scriptstyle C \rightarrow C_{\beta}} ~
\myinferrule{\scriptscriptstyle C \rightarrow C'}{\scriptscriptstyle C \rightarrow C_{\beta}}
\]

typesets to different math styles:

enter image description here

If you need to regularly set this to different math styles, I can make it (at the expense of extra coding) so that the style need not be set within the arguments themselves, as it is here. So let me know if that's the case.

Best Answer

Related Solutions

[Tex/LaTex] Aligning image and text on top, with minipages

[Tex/LaTex] Bad vertical alignment with double-line inference rule

Related Question