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Proofs and Refutations is a book by the philosopher Imre Lakatos expounding his view of
the progress of mathematics. The book is written as a series of Socratic dialogues involving a group of students who debate the proof of the Euler characteristic defined for the polyhedron. A central theme is that definitions are not carved in stone, but often have to be patched up in the light of later insights, in particular failed proofs. This gives mathematics a somewhat experimental flavour. At the end of the Introduction, Lakatos explains that his purpose is to challenge formalism in mathematics,...
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latex.ltx says
\newdimen\z@ \z@=0pt % can be used both for 0pt and 0
so as it says it is short (and efficient) way of getting 0.
You should always have a copy of the latex source file latex.ltx in a text editor window while reading package code:-), or perhaps, if you prefer, the typeset versi...
the code seems to be correct, with compilation no error appears.
The code is
\documentclass{beamer}
\usetheme{Singapore}
\usepackage{media9}
\usepackage{hyperref}
\begin{frame}\frametitle{Title}
\includemedia[
width=\paperwidth,height=0.7\linewidth,
activate=pageopen,
flashvars={movie.mp4 &...
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