Latex equation editor for Word and PowerPoint

If you use Latex, usually you hate the equation editor that is built in Microsoft office. One of the miserable factors is that, though the Microsoft office suit has been in the market for more than 20 years, Microsoft failed to provide a decent mathematical equation editor for the academics. In this post, I would like to share the tools I use for Word and PowerPoint.

• For Word, I use TexSword, http://texsword.sourceforge.net/. TeXsword is a macro package for Microsoft Word. It allows you to insert equations with labels, and equations can be referenced later on. Of course,  you use LaTeX to typeset equations.
  
• For PowerPoint, I would like to recommend IguanaTex, http://www.technion.ac.il/~zvikabh/software/iguanatex/ (see below for the new official website). It is a PowerPoint plug-in that allows you to insert LaTeX equations into your PowerPoint presentation. There are other tools available, such as  PowerPointLaTeX, https://code.google.com/p/powerpointtools/wiki/PowerPointLaTeX. But I haven't tried it.
  
  Update: 17 July 2015
  Now IguanaTex is maintained by Jonathan Le Roux. It was expanded from the original version, written by Zvika Ben-Haim. Thus the new official website is http://www.jonathanleroux.org/software/iguanatex/.

Both TexSword and IguanaTex have been tested with Office 2010 and they work well.

Stack math symbols in Latex

When typing in formulas in Latex, sometimes we need to stack math symbols, especially with arrows. Here are some examples that show how to achieve this goal.

1. Using \xleftarrow or \xrightarrow. Both of them have the same syntax.
   

   a=b \xleftarrow[H]{\xi+a\timesc} f=g

   
   
   
2. Using \overset
   

   a=b\overset{F}{\longleftarrow}c=d

   
   
   
3. Using \underset
   a=b\underset{F}{\longleftarrow}c=d
   
   
   
4. Using \stackrel
   

   a=b \stackrel{F}{\longleftrightarrow}c=d

   
   
   
5. Using \mathop
   

   ab \mathop{\sum\sum\sum}_{a=\frac{1}{2}\times 100000}^{b=\frac{4}{5}}cd

   
   

Chinese version:Latex: 堆叠数学符号