Added sneaky interpolation functor jokes.

refs.bib

@@ -151,3 +151,24 @@
   year={2001},
   publisher={Springer Berlin Heidelberg}
 }
+
+
+
+@techreport{aronszajn1964interpolation,
+  title={Interpolation spaces and interpolation methods},
+  author={Aronszajn, Nachman and Gagliardo, Emilio},
+  year={1964}
+}
+@book{brudnyi1991interpolation,
+  title={Interpolation functors and interpolation spaces},
+  author={Brudnyi, Yu A and Krugljak, N Ya},
+  volume={47},
+  year={1991},
+  publisher={Elsevier}
+}
+@book{PietschHistory,
+  title={History of Banach spaces and linear operators},
+  author={Pietsch, Albrecht},
+  year={2007},
+  publisher={Springer}
+}

src/fa/interpolation/functors.tex

@@ -0,0 +1,10 @@
+\section{Interpolation Functors}
+\label{section:interpolation-functors}
+
+\textit{"In the presence of so many different interpolation methods it seemed timely to study the general structure of all possible methods: to determine all of them and to analyze the properties which are common to all."} — \cite[Page 51]{aronszajn1964interpolation}. 
+
+\textit{"This is how things appeared in 1965. Fifteen years later, it was found that the number
+of interpolation methods at our disposal is not large."} — \cite[Page vi, Footnote 3]{brudnyi1991interpolation}. 
+
+The above quotes are taken from \cite[Page 427]{PietschHistory}.
+

src/fa/interpolation/index.tex

@@ -0,0 +1,6 @@
+\chapter{Interpolation Spaces}
+\label{chap:interpolation}
+
+\input{./functors.tex}
+
+