I can't make what I type to pdf

Question

I can't make pdf I type this :

‎‎

$‎E(‎\frac{1}{2}‎\Phi ‎+‎\frac{1}{2}‎\Phi‎‎\prime ‎,‎\frac{1}{2}‎\Psi ‎+‎\frac{1}{2}‎\Psi‎‎\prime‎)\leq ‎‎\frac{1}{2}E(‎\Phi , ‎‎‎‎\Psi‎‎\prime‎)+‎\frac{1}{2}E(‎\Phi‎‎\prime ‎,‎\Psi‎).‎‎$‎

\begin{eqmarray}‎‎
‎‎$‎\sum‎_‎{u\in‎\Sigma‎(0,‎\Gamma‎) }‎\frac{1}{|‎\Gamma‎_u | }E_{u,‎\Phi‎}‎‎‎(‎\Psi‎(u)) ‎‎$‎

‎‎$‎‎~&=&‎\sum_‎{u\in ‎\Sigma‎(0,‎\Gamma‎)  }‎\frac{1}{|‎\Gamma‎_u| }‎\sum‎‎\underline{‎v‎\in‎\Sigma‎_u(0) }m((u,v))f(d(‎\Psi‎(u),‎\Phi‎(v)))‎‎$‎

‎‎$‎~&=&‎\sum\_‎{u\in‎\Sigma‎(0,‎\Gamma‎)  }‎\frac{1}{|‎\Gamma‎_u| }\sum‎_{‎\eta‎\in‎\Sigma‎(1),‎u‎\subset‎‎\eta ‎}‎‎\frac{m(\eta)}{2}‎f(d(‎\Psi‎(u),‎\Phi‎(‎\eta‎ -u)))‎,‎‎$‎

‎‎$‎~&=‎&‎\sum‎‎_{\eta\in‎\Sigma‎(1,‎\Gamma‎)  }‎\frac{m(‎\eta‎ }{2|‎\Gamma‎_\eta | }‎\sum‎‎_{u\in‎\Sigma‎(0),u\subset‎\eta‎ }‎f(d(‎\Psi‎(u),‎\Phi‎(\eta -‎u)))‎‎$‎

‎‎$‎‎~‎&=&‎‎\sum‎‎_{(u,v)\in‎\Sigma‎(1,‎\Gamma‎)  }‎\frac{m((u,v))}{2|‎\Gamma‎_(u,v)| }(f(d(‎\Psi‎(u),‎\Phi‎(v)))+f(d(‎\Psi‎(v),‎\Phi‎(u)))‎‎$‎

‎‎$‎~&=&‎\sum‎‎_{(u,v)\in‎\Sigma‎(1,‎\Gamma‎)  }‎\frac{m((u,v))}{|‎\Gamma‎_(u,v) }f(d(‎\Psi‎(u),‎\Phi‎(v)))‎‎$‎

‎‎$‎~&=&E(‎\Phi ‎,‎\Psi‎).‎‎$‎

\end{eqmarray}‎‎‎

please help me

Try eqnarray instead of eqmarray. But in fact eqnarray is not what you should be using. align is better. See http://tex.stackexchange.com/questions/196/eqnarray-vs-align — Ethan Bolker, Jun 30 '15 at 15:07
and inside eqnarray or align you should not use $ you are already in math mode and you may not have blank lines. But please always post complete documents and say exactly what error you got, so we can reproduce it. — David Carlisle, Jun 30 '15 at 15:08
@SeanAllred which will tell you all about U+200E I'm sure:-) — David Carlisle, Jun 30 '15 at 15:39

David Carlisle · Answer 1 · 2015-06-30T19:02:09.917

Something like this, although it is still a little wide for the page

Note that you had one "hidden" error in addition to the general syntax errors, each of your \sum_ is the unicode sequence

  U+005c REVERSE SOLIDUS
  U+0073 LATIN SMALL LETTER S
  U+0075 LATIN SMALL LETTER U
  U+006d LATIN SMALL LETTER M
  U+200e LEFT-TO-RIGHT MARK
  U+200e LEFT-TO-RIGHT MARK
  U+005f LOW LINE

The two left-to-right mark characters meant that the subscript was not seen as a subscript of the summation sign, but of an empty math atom to the right.

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\[
E(\frac{1}{2}\Phi +\frac{1}{2}\Phi' ,\frac{1}{2}\Psi +\frac{1}{2}\Psi')\leq \frac{1}{2}E(\Phi , \Psi')+\frac{1}{2}E(\Phi' ,\Psi)
\]

\begin{align*}
\sum_{u\in\Sigma(0,\Gamma)}\frac{1}{|\Gamma_u | }E_{u,\Phi}(\Psi(u)) \\
&=\sum_{u\in \Sigma(0,\Gamma)  }\frac{1}{|\Gamma_u| }\sum\underline{v\in\Sigma_u(0) }m((u,v))f(d(\Psi(u),\Phi(v)))\\
&=\sum_{u\in\Sigma(0,\Gamma)  }\frac{1}{|\Gamma_u| }\sum_{\eta\in\Sigma(1),u\subset\eta }\frac{m(\eta)}{2}f(d(\Psi(u),\Phi(\eta -u))),\\
&=\sum_{\eta\in\Sigma(1,\Gamma)  }\frac{m(\eta }{2|\Gamma_\eta | }\sum_{u\in\Sigma(0),u\subset\eta }f(d(\Psi(u),\Phi(\eta -u)))\\
&=\sum_{(u,v)\in\Sigma(1,\Gamma)  }\frac{m((u,v))}{2|\Gamma_{(u,v)}| }(f(d(\Psi(u),\Phi(v)))+f(d(\Psi(v),\Phi(u)))\\
&=\sum_{(u,v)\in\Sigma(1,\Gamma)  }\frac{m((u,v))}{|\Gamma_{(u,v)}|}f(d(\Psi(u),\Phi(v)))\\
&=E(\Phi ,\Psi).
\end{align*} 

\end{document}

I can't make what I type to pdf

1 Answers1