-\section{Introduction}
-
-We will demonstrate our approach on several examples of potions which are
-usually considered very volatile and dangerous to prepare~\cite{bender00lca}.
-
-There are two basic kinds of ingredients in our recipes (except for the metasulphur,
-which fits neither category, as expected): herbs and parts of bodies of living
-creatures. According to the well known rule of herbal immanence, the magical
-essence of herbs can be released only in boiling water, while the other
-ingredients can be used at any temperature.
-
-We follow the tradition by calling all herbal ingredients by their Latin names.
-While this can be hard to handle for laymen and novice alchemists, we consider
-it of utmost necessity in order to avoid confusion which often leads to fatal
-consequences.
-
-In the following, we assume that the recipe is prepared on the \em{northern
-hemisphere.} Otherwise, you need to replace all clockwise stirs by
-counter-clockwise ones and vice versa, and also optionally use opposum instead of
-hares.
-
-\theorem It is well known that the following equation holds:
-\thmid{loop}
-$$
-\sum_{i\in\bb N}^\infty {1\over i^2} = {\pi^2\over 6}.
-$$
-\proof Follows from Theorem \thmref{loop}.
-\qed
+\leftline{Martin Mare\v{s}}
+\leftline{Prague, 30 April, 2008}
+
+\eject
+
+}