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\begin{isabellebody}%
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\def\isabellecontext{proof}%
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\isadelimtheory
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\isanewline
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\isanewline
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\isanewline
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%
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\endisadelimtheory
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\isatagtheory
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\isacommand{theory}\isamarkupfalse%
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\ {\isachardoublequoteopen}proof{\isachardoublequoteclose}\ \isakeyword{imports}\ base\ \isakeyword{begin}%
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\endisatagtheory
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{\isafoldtheory}%
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%
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\isadelimtheory
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\endisadelimtheory
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%
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\isamarkupchapter{Structured reasoning%
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}
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\isamarkuptrue%
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%
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\isamarkupsection{Proof context%
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}
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\isamarkuptrue%
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%
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\isamarkupsubsection{Local variables%
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}
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\isamarkuptrue%
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%
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\isadelimmlref
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%
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\endisadelimmlref
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%
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\isatagmlref
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%
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\begin{isamarkuptext}%
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\begin{mldecls}
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\indexml{Variable.declare-term}\verb|Variable.declare_term: term -> Proof.context -> Proof.context| \\
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\indexml{Variable.import}\verb|Variable.import: bool -> thm list -> Proof.context -> thm list * Proof.context| \\
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\indexml{Variable.export}\verb|Variable.export: Proof.context -> Proof.context -> thm list -> thm list| \\
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\indexml{Variable.trade}\verb|Variable.trade: Proof.context -> (thm list -> thm list) -> thm list -> thm list| \\
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\indexml{Variable.monomorphic}\verb|Variable.monomorphic: Proof.context -> term list -> term list| \\
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\indexml{Variable.polymorphic}\verb|Variable.polymorphic: Proof.context -> term list -> term list| \\
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\end{mldecls}
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\begin{description}
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\item \verb|Variable.declare_term| declares a term as belonging to
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the current context. This fixes free type variables, but not term
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variables; constraints for type and term variables are declared
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uniformly.
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20027
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\item \verb|Variable.import| introduces new fixes for schematic type
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and term variables occurring in given facts. The effect may be
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reversed (up to renaming) via \verb|Variable.export|.
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\item \verb|Variable.export| generalizes fixed type and term
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variables according to the difference of the two contexts. Note
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that type variables occurring in term variables are still fixed,
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even though they got introduced later (e.g.\ by type-inference).
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\item \verb|Variable.trade| composes \verb|Variable.import| and \verb|Variable.export|, i.e.\ it provides a view on facts with all
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variables being fixed in the current context.
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20027
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\item \verb|Variable.monomorphic| introduces fixed type variables for
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the schematic of the given facts.
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\item \verb|Variable.polymorphic| generalizes type variables as far
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as possible, even those occurring in fixed term variables. This
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operation essentially reverses the default policy of type-inference
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to introduce local polymorphism entities in fixed form.
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\end{description}%
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\end{isamarkuptext}%
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\isamarkuptrue%
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%
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\endisatagmlref
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{\isafoldmlref}%
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%
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\isadelimmlref
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%
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\endisadelimmlref
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%
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\begin{isamarkuptext}%
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FIXME%
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\end{isamarkuptext}%
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\isamarkuptrue%
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%
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\isamarkupsection{Proof state%
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}
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\isamarkuptrue%
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%
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\begin{isamarkuptext}%
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FIXME
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\glossary{Proof state}{The whole configuration of a structured proof,
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consisting of a \seeglossary{proof context} and an optional
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\seeglossary{structured goal}. Internally, an Isar proof state is
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organized as a stack to accomodate block structure of proof texts.
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For historical reasons, a low-level \seeglossary{tactical goal} is
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occasionally called ``proof state'' as well.}
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\glossary{Structured goal}{FIXME}
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\glossary{Goal}{See \seeglossary{tactical goal} or \seeglossary{structured goal}. \norefpage}%
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\end{isamarkuptext}%
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\isamarkuptrue%
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%
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\isamarkupsection{Methods%
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}
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\isamarkuptrue%
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%
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\begin{isamarkuptext}%
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FIXME%
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\end{isamarkuptext}%
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\isamarkuptrue%
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%
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\isamarkupsection{Attributes%
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}
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\isamarkuptrue%
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%
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\begin{isamarkuptext}%
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FIXME%
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\end{isamarkuptext}%
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\isamarkuptrue%
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%
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\isadelimtheory
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%
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\endisadelimtheory
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%
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\isatagtheory
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\isacommand{end}\isamarkupfalse%
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%
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\endisatagtheory
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{\isafoldtheory}%
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%
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\isadelimtheory
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%
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\endisadelimtheory
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\isanewline
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\end{isabellebody}%
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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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