diff --git a/thys/Irrationals_From_THEBOOK/document/root.tex b/thys/Irrationals_From_THEBOOK/document/root.tex
--- a/thys/Irrationals_From_THEBOOK/document/root.tex
+++ b/thys/Irrationals_From_THEBOOK/document/root.tex
@@ -1,37 +1,41 @@
 \documentclass[11pt,a4paper]{article}
 \usepackage[T1]{fontenc}
 \usepackage{amsmath}
 \usepackage{isabelle,isabellesym}
 
 % this should be the last package used
 \usepackage{pdfsetup}
 
 % urls in roman style, theory text in math-similar italics
 \urlstyle{rm}
 \isabellestyle{it}
 
 
 \begin{document}
 
 \title{Irrational numbers from THE BOOK}
 \author{Lawrence C. Paulson}
 \maketitle
 
 \begin{abstract}
 An elementary proof is formalised: that $\exp r$ is irrational for every nonzero rational number~$r$. The mathematical development comes from the well-known volume \emph{Proofs from THE BOOK}~\cite[pp.\thinspace51--2]{aigner-proofs}, by Aigner and Ziegler, who credit the idea to Hermite. The development illustrates a number of basic Isabelle techniques: the manipulation of summations, the calculation of quite complicated derivatives and the estimation of integrals.
 We also see how to import another AFP entry (Stirling's formula)~\cite{Stirling_Formula-AFP}.
 
 As for the theorem itself, note that a much stronger and more general result (the Hermite--Lindemann--Weierstra\ss{} transcendence theorem) is already available in the AFP~\cite{Hermite_Lindemann-AFP}.
 \end{abstract}
 
 \newpage
 \tableofcontents
+
+\paragraph*{Acknowledgements}
+The author was supported by the ERC Advanced Grant ALEXANDRIA (Project 742178) funded by the European Research Council. 
+
 \newpage
 
 % include generated text of all theories
 \input{session}
 
 \bibliographystyle{abbrv}
 \bibliography{root}
 
 \end{document}
diff --git a/thys/Youngs_Inequality/document/root.tex b/thys/Youngs_Inequality/document/root.tex
--- a/thys/Youngs_Inequality/document/root.tex
+++ b/thys/Youngs_Inequality/document/root.tex
@@ -1,39 +1,43 @@
 \documentclass[11pt,a4paper]{article}
 \usepackage[T1]{fontenc}
 \usepackage{amsmath}
 \usepackage{isabelle,isabellesym}
 
 % this should be the last package used
 \usepackage{pdfsetup}
 
 % urls in roman style, theory text in math-similar italics
 \urlstyle{rm}
 \isabellestyle{it}
 
 
 \begin{document}
 
 \title{Young's Inequality for Increasing Functions}
 \author{Lawrence C. Paulson}
 \maketitle
 
 \begin{abstract}
 Young's inequality states that
 $$ ab \leq \int_0^a f(x)dx + \int_0^b f^{-1}(y) dy $$
 where $a\geq 0$, $b\geq 0$ and $f$ is strictly increasing and continuous.
 Its proof is formalised following the development by Cunningham and Grossman~\cite{cunningham-youngs}.
 Their idea is to make the intuitive, geometric folklore proof rigorous by reasoning about step functions.
 The lack of the Riemann integral makes the development longer than one would like, but their argument is reproduced faithfully.
 \end{abstract}
 
 \newpage
 \tableofcontents
+
+\paragraph*{Acknowledgements}
+The author was supported by the ERC Advanced Grant ALEXANDRIA (Project 742178) funded by the European Research Council. 
+
 \newpage
 
 % include generated text of all theories
 \input{session}
 
 \bibliographystyle{abbrv}
 \bibliography{root}
 
 \end{document}