\documentclass[11pt,a4paper]{book}
\input{Configs/Configs}
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%% TITLE PAGE %%
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\begin{document}
\renewcommand{\contentsname}{\vspace{0cm} Contenido \vspace{-2cm}}
\begin{titlepage}
\vspace*{2cm}
\noindent
\centering{\titlefont{Título}}
\vspace*{5cm}
\begin{minipage}{\linewidth}
\centering \printauthor
\vspace*{5cm}
\includegraphics[scale=1]{Logos/logo_un.jpg}\\
\fontsize{13pt}{13pt}\selectfont Facultad de Ciencias\\
\vspace{0.1cm}
Departamento de Matemáticas\\
\vspace{0.1cm}
Bogotá, D.C, Colombia\\
\vspace{0.1cm}
\today
\end{minipage}
\end{titlepage}
\input{Minimals/Info}
\newpage
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%% ABSTRACT %%
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\input{Minimals/abstract}
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%% AGRADECIMIENTOS %%
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\input{Minimals/Acknowledgment}
\blankpages
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%% CONTENIDO %%
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\let\cleardoublepage=\clearpage
\tableofcontents
\thispagestyle{empty}
\blankpages
\geomdoc % aplica geometría nueva al documento.
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%% CUERPO DEL DOCUMENTO, CAPITULOS %%
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\chapter{Ejemplo I}
\input{Chapters/1}
\blankpage
\chapter{Ejemplo II}
\input{Chapters/2}
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%% BIBLIOGRAFÍA %%
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\blankpages
\bibliographystyle{unsrt}
\bibliography{references}
\nocite{*}
\end{document}