[Tex/LaTex] Missing = inserted for \ifnum. \usepackage

compilingmissing

I am trying to execute my code, but I am getting two errors. The main thing is that I want to keep the format of the document to be produced. It is giving a lot of Missing = inserted for \ifnum. \usepackage` Can anyone please help me out with this?

\documentclass[oneside,a4paper,12pt]{book}
\usepackage[pdfspacing]{classicthesis}
\usepackage{lmodern}
\usepackage[utf8]{inputenc}
%\usepackage[latin9]{inputenc}
\usepackage[brazil]{babel}
\usepackage[T1]{fontenc}
\usepackage[a4paper,top=2cm,bottom=2cm,left=3cm,right=2cm]{geometry}
\usepackage{setspace} \onehalfspacing
\usepackage{lastpage,expl3}

\newcounter{dummy} 
\providecommand{\mLyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\@}
\usepackage{lipsum}
\PassOptionsToPackage{latin9}{inputenc} 

\usepackage{inputenc,amsthm,amsmath,graphicx,xspace,mparhack,fixltx2e}
\usepackage{hyperref} 

\begin{document}
TESTE
\end{document}

The errors are:

Missing = inserted for \ifnum. \RequirePackage{expl3}[2018/10/31]

Missing = inserted for \ifnum. \ProvidesExplPackage

Missing = inserted for \ifnum. \@ifpackagelater { expl3 } { 2018/10/31 }

Missing = inserted for \ifnum. }

Best Answer

Ulrike Fischer from here answered the following on this possibly related problem on sourceforge (the latter is a permalink to just the question)

This error message pops up a lot recently, but it is unclear (to me) what it means exactly (I never use texify). I suggest that you try this:

Open the package manager (admin), synchronize (menu repositories), check for new package starting with "miktex-" and install them.

Run the update manager (admin) and install updates of miktex packages.

If the problem persist try another editor and try if it works if you don't use texify.

I had the same error and this helped me to deal with this more-or-less version conflict.

Related Solutions

[Tex/LaTex] Missing $ inserted for matrices

top example work as expected, in all other you make mistakes: nested equations in equation:

$R_z (\theta)=$
    \[\begin{bmatrix}
    $cos(\theta)$ & $-sin(\theta)$  & $0$ \\
    $sin(\theta)$ & $cos(\theta)$ & $0$ \\
    $0$ & $0$ & $1$
\end{bmatrix}\]

are forbidden. correct way is:

\documentclass{article}
\usepackage{amsmath}

\begin{document}
\[    % <-- start math environment
R_z (\theta)=
\begin{bmatrix}
    \cos(\theta) & -\sin(\theta)  & 0 \\
    \sin(\theta) &  \cos(\theta)  & 0 \\
    0            & 0             & 1
\end{bmatrix}
\]    % <-- end of math environment
\end{document}

which gives expected rezult:

note: for cos and sin you should use predefined math operators \cos and \sin which write them correctly with upright fonts (and on this way distinguish operators from variables).

as novice, i suggest you to read some introductory text about math settings by latex. for example LaTeX/Mathematics and more advanced use LaTeX/Advanced Mathematics (beside this two text you can find by googling many others :-))

[Tex/LaTex] Missing $ inserted in a table

You are missing the dollar signs for the math code V_n and \le which causes the error (as already stated by other users in the comments). Inside a tabular every cell is an own box and you need to enable math mode for each one.

In addition to that you have some other issues in your code:

Don't use the center environment but the \centering command. The former adds unwanted vertical space and is for text paragraphs only. See Should I use center or centering for figures and tables? for further details.
For the physical units and percent values I recommend the great siunitx package
Try to avoid vertical rules in your table and try to use the booktab package. Less rules in the table make it look better.
The use of {table}[h!] is one of the most frequent beginner issue as they don't understand the use of floats (In short: they should float!). If you want a table at a certain position in the text then the table environment is not a good choice (yes, confusing!). See Force figure placement in text and maybe also How to influence the position of float environments like figure and table in LaTeX? for more information.

Here a version of your code with the improvements added:

\documentclass{article}
\usepackage{blindtext}% for example text here only
\usepackage{multirow}
\usepackage{caption} % proper table caption distance
\usepackage{booktabs} % book quality table lines
\usepackage{siunitx} % format SI units
\sisetup{output-decimal-marker = {,}} % use comma as decimal marker

\begin{document}
\blindtext

\begin{table}[h!]
\caption{Valores de referência para as distorções harmônicas totais de tensão.}
\centering % don't use {center} environment, which is for text paragraphs only and add unwanted vertical space before and after
\label{limites_distorcao}
\begin{tabular}{cccc}
\toprule
\multirow{2}{*}{Indicador} & \multicolumn{3}{c}{Tensão Nominal do Barramento}                                                          \\[.25ex]  
                           & $V_n \le \SI{1}{\kilo\volt} $ & $ \SI{1}{\kilo\volt} \le V_n \le \SI{69}{\kilo\volt} $ & $ \SI{69}{\kilo\volt} \le V_n \le \SI{230}{\kilo\volt} $\\ \midrule
$DHTvI_i$                  & \SI{7,5}{\%}                  & \SI{6}{\%}                                 & \SI{4}{\%}                                         \\ 
$DHTv3_i$                  & \SI{6,5}{\%}                  & \SI{5}{\%}                                 & \SI{3}{\%}                                         \\ 
\bottomrule
\end{tabular}

\end{table}

\blindtext

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Missing $ inserted for matrices

[Tex/LaTex] Missing $ inserted in a table

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