Qfyilyi

Hello guys first question and beginner in LaTeX,

the following code presents part of my thesis presentation. I have no idea what i did wrong. Checked for brackets and $-signs twice. Maybe i did something wrong without knowing? This frame is the one that breaks the presentation, despite yesterday everything worked fine. Hope someone can help me.

The errors:

Missing $ inserted. end{frame}

Display math should end with $$. end{frame}

Missing $ inserted. end{frame}

Missing $ inserted. end{frame}

Bad math environment delimiter. end{frame}

You can't use 'eqno' in internal vertical mode. end{frame}´

Missing $ inserted. end{frame}

Display math should end with $$. end{frame}

Undefined control sequence. end{frame}

Undefined control sequence. end{frame}

The code:

documentclass [draft=on,t,compress,11pt,xcolor=dvipsnames]{beamer}

usetheme{default}

usepackage{amsmath}

usepackage{tikz, graphicx}

usepackage{lmodern}        % <--- those two packages help when you use

usepackage[T1]{fontenc}    % the default font LaTeX font



begin{document}



begin{frame}{Explanation of the Papers Regression Function for Modern 

versus Traditional Manufacturing }



vspace{-1cm}

begin{equation}

%begin{multline}



ln(wage_{jn}) =beta_1 S_n+beta_2 x I^{M}_j+gamma_1h_n+gamma_2h_n x 

I^{M}_j+delta_1boldsymbol{X}_n+delta_2boldsymbol{X}_n x 

I^{M}_j+alpha_j\

+alpha_n +xi_jn



%end{multline}

end{equation}







vspace{+0.5cm} begin{itemize}

item{ $ln(wage_{jn})$ = Proxy for firm productivity.} 

item{$S_n$ = Represents  proxies for knowledge elites in location n.}

item {$I^{M}_j$ = Indicator variable that takes on value 1 if sector j is 

glqq modern grqq.}

item{$h_n$ = Denotes proxies for average human capital, such as literacy 

and schooling.}

item{$boldsymbol{X}_n$ = Vector of control variables.}

item{ $alpha_j$ and $alpha_n$ = Sector fixed effects ($alpha_j$) and 

location fixed effects ($alpha_n$).}

item{$xi_n$ = Error term.}

end{itemize}



end{frame}





end{document}

The main problem: You must not have empty lines within equation

Some further comments:

• you don't need usetheme{default}, as the name says it is loaded by default




• you don't need usepackge{graphicx} with beamer




• to split your equation over multiple lines, you can for example use begin{split}...end{split}




• are you misusing x for multiplication?




• the syntax for items is item text (without {})




• glqq and grqq are not defined in your code.




• use ln for logarithm (Thanks to @Mico for spotting this!)

 documentclass[draft=on,t,compress,11pt,xcolor=dvipsnames]{beamer}

%usetheme{default}

usepackage{amsmath}

usepackage{tikz}%, graphicx}

usepackage{lmodern}        % <--- those two packages help when you use

usepackage[T1]{fontenc}    % the default font LaTeX font



begin{document}



begin{frame}

frametitle{Explanation of the Papers Regression Function for Modern versus Traditional Manufacturing}



begin{equation}

begin{split}

ln(text{wage}_{jn}) =beta_1 S_n+beta_2 times I^{M}_j+gamma_1h_n+gamma_2h_n times I^{M}_j+delta_1boldsymbol{X}_n+\

delta_2boldsymbol{X}_n times I^{M}_j+ alpha_j +alpha_n +xi_jn

end{split}

end{equation}



begin{itemize}

item $ln(text{wage}_{jn})$ = Proxy for firm productivity. 

item $S_n$ = Represents  proxies for knowledge elites in location n.

item $I^{M}_j$ = Indicator variable that takes on value 1 if sector j is  ``modern''.

item $h_n$ = Denotes proxies for average human capital, such as literacy and schooling.

item $boldsymbol{X}_n$ = Vector of control variables.

item $alpha_j$ and $alpha_n$ = Sector fixed effects ($alpha_j$) and location fixed effects ($alpha_n$).

item$xi_n$ = Error term.

end{itemize}



end{frame}



end{document}