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I have to write in an assignment for school a list of mathematical symbols, like N, R, the union sign, the not-equal to sign and a couple more. I know all the commands, but how do i get them in my file, with a space between them and centered, without getting an error message?

Just a beginner

Tim Swillens
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    Possible duplicate of What are good learning resources for a LaTeX beginner? – diabonas Sep 14 '17 at 15:27
  • Welcome! What code do you have so far? What error message are you getting? Did you remember to switch to maths mode? – cfr Sep 14 '17 at 15:39
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    Here is a number of oft-used symbols \begin{align} \alpha \beta \gamma \delta \epsilon \zeta \eta \theta \kappa \lambda \mu \nu \xi \pi \rho \sigma \tau \phi \psi \omega\ \leq! \geq! \neq! \cap! \cup! \subset! \supseteq! \in! {\ } \Rightarrow! \iff! \N! \R! \end{align}

    \end{document}

     – Tim Swillens Sep 14 '17 at 15:41
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    this is what is have now, we use packages \amsmath \amsthm \amssymb – Tim Swillens Sep 14 '17 at 15:42
  • i got the following error message ! Undefined control sequence. ...seteq \in { } \Rightarrow \iff \N \R l.67 \end{align}

    ?

     – Tim Swillens Sep 14 '17 at 15:50
  • the error message you show isn't useful in the form you show -- the point at which the line breaks is very important. please edit it, as code, into your question (you are always able to edit your own question). it might be helpful to also show the input file there -- it shouldn't be very long. – barbara beeton Sep 14 '17 at 16:09

1 Answers1

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It sounds like you're doing something similar to The Comprehensive LATEX Symbol List. If you look through the source for that document, here's how they format their tables (Negated Harpoons table on page 81 copied here):

\begin{symtable}[MNS]{\MNS\ Negated Harpoons}
\index{harpoons}
\index{restrictions}
\label{mns-nharpoons}
\begin{tabular}{*3{ll}}
\K[\MNSndownharpoonccw]\ndownharpoonccw$^*$             & \K[\MNSnneswharpoons]\nneswharpoons           & \K[\MNSnseharpooncw]\nseharpooncw                       \\
\K[\MNSndownharpooncw]\ndownharpooncw$^*$               & \K[\MNSnneswharpoonsenw]\nneswharpoonsenw     & \K[\MNSnsenwharpoons]\nsenwharpoons                     \\
\K[\MNSndownupharpoons]\ndownupharpoons                 & \K[\MNSnnwharpoonccw]\nnwharpoonccw           & \K[\MNSnswharpoonccw]\nswharpoonccw                     \\
\K[\MNSnleftharpoonccw]\nleftharpoonccw$^*$             & \K[\MNSnnwharpooncw]\nnwharpooncw             & \K[\MNSnswharpooncw]\nswharpooncw                       \\
\K[\MNSnleftharpooncw]\nleftharpooncw$^*$               & \K[\MNSnnwseharpoonnesw]\nnwseharpoonnesw     & \K[\MNSnswneharpoons]\nswneharpoons                     \\
\K[\MNSnleftrightharpoondownup]\nleftrightharpoondownup & \K[\MNSnnwseharpoons]\nnwseharpoons           & \K[\MNSnupdownharpoonleftright]\nupdownharpoonleftright \\
\K[\MNSnleftrightharpoons]\nleftrightharpoons           & \K[\MNSnnwseharpoonswne]\nnwseharpoonswne     & \K[\MNSnupdownharpoonrightleft]\nupdownharpoonrightleft \\
\K[\MNSnleftrightharpoonupdown]\nleftrightharpoonupdown & \K[\MNSnrightharpoonccw]\nrightharpoonccw$^*$ & \K[\MNSnupdownharpoons]\nupdownharpoons                 \\
\K[\MNSnneharpoonccw]\nneharpoonccw                     & \K[\MNSnrightharpooncw]\nrightharpooncw$^*$   & \K[\MNSnupharpoonccw]\nupharpoonccw$^*$                 \\
\K[\MNSnneharpooncw]\nneharpooncw                       & \K[\MNSnrightleftharpoons]\nrightleftharpoons & \K[\MNSnupharpooncw]\nupharpooncw$^*$                   \\
\K[\MNSnneswharpoonnwse]\nneswharpoonnwse               & \K[\MNSnseharpoonccw]\nseharpoonccw           &                                                         \\
\end{tabular}

\bigskip

\begin{tablenote}[*]
  Where marked, the ``\verb|ccw|'' suffix can be replaced with
  ``\verb|up|'' and the ``\verb|cw|'' suffix can be replaced with
  ``\verb|down|''.  (In addition, \cmdI[\MNSnupharpooncw]{\nupharpooncw}
  can be written as \cmdI[\MNSnupharpooncw]{\nrestriction}.)
\end{tablenote}
\end{symtable}

This won't compile if you copy it directly (they have some custom stuff defined), but it should give you a good point to build from.

RagingRoosevelt
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