TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am new to LaTeX (sort of) and my fresh installation of TeXnicCenter with MikTeX doesn't recognize many symbols. For example: \nsubseteq, \subseteqq and \nsubseteqq (and the superset counterparts).

I've tried exporting both to PDF and DVI.

share|improve this question
Are you loading the amssymb package? Add \usepackage{amssymb} to the preamble and see if the problem persists. – Gonzalo Medina Nov 3 '11 at 13:22
up vote 5 down vote accepted

Load the package amssymb (as Gonzalo suggested) or mathabx:

  \nsubseteq \nsubseteqq \subseteqq

subset symbols

For other symbols, load the package which provides it. You can find it in The Comprehensive LaTeX Symbol List.

share|improve this answer
Hurrah! Didn't see any of these mentioned anywhere, assumes these we on by default. I think amssymb is nicer. – Ramon Snir Nov 3 '11 at 13:31

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.