included logo, some small fixes

Author: thomasWeise

README.md

@@ -50,7 +50,7 @@ This version may change since this course and book both are work in progress.
 You can freely share this.
 You can also copy text or figures under the license given below, as long as you cite the book as the original source, e.g., by using the following BibTeX:
 
-<pre>@book{programmingWithPython,<br/>&nbsp;author&nbsp;=&nbsp;{<a href="http://iao.hfuu.edu.cn/5">Thomas&nbsp;Weise</a>},<br/>&nbsp;title&nbsp;=&nbsp;{Programming&nbsp;with&nbsp;Python},<br/>&nbsp;year&nbsp;=&nbsp;{2024--2025},<br/>&nbsp;publisher&nbsp;=&nbsp;{<a href="http://iao.hfuu.edu.cn">Institute&nbsp;of&nbsp;Applied&nbsp;Optimization</a>,<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.hfuu.edu.cn/aibd">School&nbsp;of&nbsp;Artificial&nbsp;Intelligence&nbsp;and&nbsp;Big&nbsp;Data</a>,<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.hfuu.edu.cn/">Hefei&nbsp;University</a>},<br/>&nbsp;address&nbsp;=&nbsp;{Hefei,&nbsp;Anhui,&nbsp;China},<br/>&nbsp;url&nbsp;=&nbsp;{<a href="https://thomasweise.github.io/programmingWithPython">https://thomasweise.github.io/programmingWithPython</a>}<br/>}</pre>
+<pre>@book{programmingWithPython,<br/>&nbsp;author&nbsp;=&nbsp;{Thomas&nbsp;Weise},<br/>&nbsp;title&nbsp;=&nbsp;{Programming&nbsp;with&nbsp;Python},<br/>&nbsp;year&nbsp;=&nbsp;{2024--2025},<br/>&nbsp;publisher&nbsp;=&nbsp;{Institute&nbsp;of&nbsp;Applied&nbsp;Optimization,<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.hfuu.edu.cn/aibd">School&nbsp;of&nbsp;Artificial&nbsp;Intelligence&nbsp;and&nbsp;Big&nbsp;Data</a>,<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.hfuu.edu.cn/">Hefei&nbsp;University</a>},<br/>&nbsp;address&nbsp;=&nbsp;{Hefei,&nbsp;Anhui,&nbsp;China},<br/>&nbsp;url&nbsp;=&nbsp;{<a href="https://thomasweise.github.io/programmingWithPython">https://thomasweise.github.io/programmingWithPython</a>}<br/>}</pre>
 
 **If you have any comments or suggestions regarding the book, or if you spotted an error or typo, please feel free to submit an [issue here](https://github.com/thomasWeise/programmingWithPython/issues).**
 Your feedback would help us to improve the book.
@@ -64,8 +64,8 @@ It is under the GNU GENERAL PUBLIC LICENSE Version 2, June 1991 and the copyrigh
 
 ## 4. Contact
 If you have any questions or suggestions, please contact
-Prof. Dr. [Thomas Weise](http://iao.hfuu.edu.cn/5) (汤卫思教授)
-at the Institute of Applied Optimization (应用优化研究所, [IAO](http://iao.hfuu.edu.cn))
+Prof. Dr. Thomas Weise (汤卫思教授)
+at the Institute of Applied Optimization (应用优化研究所, IAO)
 of the School of Artificial Intelligence and Big Data ([人工智能与大数据学院](http://www.hfuu.edu.cn/aibd))
 of [Hefei University](http://www.hfuu.edu.cn/english/) ([合肥大学](http://www.hfuu.edu.cn/)),
 in Hefei, Anhui, China (中国安徽省合肥市)

bookbase

@@ -145,7 +145,7 @@
 Let us investigate these options by investigating another interesting mathematical operation:
 The computation of the greatest common divisor, also known as~\pythonil{gcd}.
 
-This can be done using the Euclidean algorithm~\cite{EHF2008EEOGTGOJLH11FEEEELIEILHIATBG11EAPWMETBFR:ENT,B1999FAOTBEA,TKY2016BEOEAOTCEG}, going back to \citeauthor{EHF2008EEOGTGOJLH11FEEEELIEILHIATBG11EAPWMETBFR:ENT} who flourished about 300~BCE.
+This can be done using the Euclidean algorithm~\cite{EHF2008EEOGTGOJLH11FEEEELIEILHIATBG11EAPWMETBFR:ENT,B1999FAOTBEA,TKY2016BEOEAOTCEG}, going back to \citeauthor{EHF2008EEOGTGOJLH11FEEEELIEILHIATBG11EAPWMETBFR:ENT} who flourished about 300~\pgls{BCE}.
 The greatest common divisor of two numbers positive~$a\in\naturalNumbersO$ and~$b\in\naturalNumbersO$ is the greatest number~$g\in\naturalNumbersO=\pythonil{gcd}(a,b)$ such that~$a\bmod g=0$ and~$b \bmod g=0$, where~$\bmod$ is the \pgls{modulodiv} operator equivalent to \python's~\pythonilIdx{\%}.
 This means that $g$~divides both $a$ and $b$ without remainder.
 If $a=b$, then obviously $\pythonil{gcd}(a,b)=a=b$ as well.

text/main/controlFlow/functions/functions.tex

@@ -1,9 +1,18 @@
 \hsection{}%
 \hsection{Introduction}%
 %
+\begin{figure}%
+\centering%
+\includegraphics[width=0.7\linewidth]{\currentDir/pythonLogo}%
+\caption{The logo of the programming language \python.}%
+\label{fig:pythonLogo}%
+\end{figure}%
+%
 Welcome to \emph{Programming with \python}, an introduction into \python\ programming.
-Our book is just one of many books that teach this programming language~\cite{K2018EIPFEUU,A2002PC,H2023ABGTP3P,LH2015DSAAWP}.
-Our focus is on teaching good programming practices right from the start, support by many examples and tools.%
+Our book is just one of many books that teach this programming language.
+You can find many more in \cref{sec:furtherReading}.
+Our focus is on teaching good programming practices right from the start, support by many examples and tools.
+And we will use \emph{lots} of examples.
 %
 \hinput{programming}{programming}%
 \hinput{whyPython}{whyPython}%

text/main/introduction/introduction.tex

@@ -1,4 +1,5 @@
 \hsection{Further Reading}%
+\label{sec:furtherReading}%
 \begin{noglslink}%
 %
 The following books and online resources may help with your understanding of the \python\ programming language.%

text/main/introduction/literature/literature.tex

@@ -19,7 +19,7 @@
 \cquotation{J2025TIFJ2JHPITPLOTY2}{\python\ is everywhere nowadays, and it is the undisputed default language of choice in many fields.}%
 %
 If you will do programming in any future employment or research position, chances are that \python\ knowledge will be useful.
-According to the 2024 annual Stack Overflow survey~\cite{SESO:DWMMMT2RFSOADS}, \python\ was the second most popular programming language, after \pgls{javascript} and \glslink{HTML}{HTML}/CSS.
+According to the 2024 annual Stack Overflow survey~\cite{SE:SO:2024DS}, \python\ was the second most popular programming language, after \pgls{javascript} and \glslink{HTML}{HTML}/CSS.
 In \github's Octoverse Report from October~2024~\cite{GS2024OALPTTLATNOGDS}, \python\ is named the most popular programming language, ranking right before \pgls{javascript}.
 
 Second, \python\ is intensely used~\cite{CBST2024LOHPPTDDSAMLA} in the fields of \pgls{AI}~\cite{RN2022AIAMA}, \pgls{ML}~\cite{SSBD2014UMLFTTA}, and \pgls{DS}~\cite{G2019DSFSFPWP,M2022PFDA} as well as optimization, which are among the most important areas of future technology.
@@ -33,7 +33,7 @@
 It has a simple and clean syntax and enforces a readable structure of programs.
 Programmers do not need to declare datatypes explicitly\footnote{at least during the first steps of learning}.
 \python\ has expressive built-in types likes lists, tuples, and dictionaries.
-Thus, \python\ was also named the language most popular for those who want to learn how to code in the aforementioned Stack Overflow survey~\cite{SESO:DWMMMT2RFSOADS}.
+Thus, \python\ was also named the language most popular for those who want to learn how to code in the aforementioned Stack Overflow survey~\cite{SE:SO:2024DS}.
 %
 \begin{figure}%
 \centering%