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\begin{isabelle}%
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\isanewline
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\ \ \ \ {"}prime(p)\ {\isasymequiv}\ 1\ <\ p\ {\isasymand}\ (m\ dvd\ p\ {\isasymlongrightarrow}\ (m=1\ {\isasymor}\ m=p)){"}%
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\begin{isamarkuptext}%
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\noindent\small
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where \isa{dvd} means ``divides''.
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Isabelle rejects this ``definition'' because of the extra \isa{m} on the
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9458
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right-hand side, which would introduce an inconsistency (why?). What you
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should have written is%
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\end{isamarkuptext}%
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\ {"}prime(p)\ {\isasymequiv}\ 1\ <\ p\ {\isasymand}\ ({\isasymforall}m.\ m\ dvd\ p\ {\isasymlongrightarrow}\ (m=1\ {\isasymor}\ m=p)){"}\end{isabelle}%
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9145
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%%% Local Variables:
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%%% mode: latex
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%%% TeX-master: "root"
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%%% End:
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