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authorHugo Herbelin2015-10-04 08:22:47 +0200
committerHugo Herbelin2015-12-10 09:35:05 +0100
commitef7264aa6106d0257e1a34f4ecf765279d9b602e (patch)
treebd35f2035eb3d92671bf85eec7d6b279fab2fb64
parent5f156b28c84a86a978ab150ab5bbac5ad928ada5 (diff)
RefMan, ch. 4: Removing confusing paragraph "Constants": in it,
constants are yet given another definition; the reference to other presentation is more confusing than helpful to me.
-rw-r--r--doc/refman/RefMan-cic.tex52
1 files changed, 27 insertions, 25 deletions
diff --git a/doc/refman/RefMan-cic.tex b/doc/refman/RefMan-cic.tex
index ca3a6135d8..3b8a8fee11 100644
--- a/doc/refman/RefMan-cic.tex
+++ b/doc/refman/RefMan-cic.tex
@@ -148,31 +148,33 @@ constraints must remain acyclic. Typing expressions that violate the
acyclicity of the graph of constraints results in a \errindex{Universe
inconsistency} error (see also Section~\ref{PrintingUniverses}).
-\subsection{Constants}
-
-Constants refers to
-objects in the global environment. These constants may denote previously
-defined objects, but also objects related to inductive definitions
-(either the type itself or one of its constructors or destructors).
-
-\medskip\noindent {\bf Remark. } In other presentations of \CIC,
-the inductive objects are not seen as
-external declarations but as first-class terms. Usually the
-definitions are also completely ignored. This is a nice theoretical
-point of view but not so practical. An inductive definition is
-specified by a possibly huge set of declarations, clearly we want to
-share this specification among the various inductive objects and not
-to duplicate it. So the specification should exist somewhere and the
-various objects should refer to it. We choose one more level of
-indirection where the objects are just represented as constants and
-the environment gives the information on the kind of object the
-constant refers to.
-
-\medskip
-Our inductive objects will be manipulated as constants declared in the
-environment. This roughly corresponds to the way they are actually
-implemented in the \Coq\ system. It is simple to map this presentation
-in a theory where inductive objects are represented by terms.
+%% HH: This looks to me more like source of confusion than helpful
+
+%% \subsection{Constants}
+
+%% Constants refers to
+%% objects in the global environment. These constants may denote previously
+%% defined objects, but also objects related to inductive definitions
+%% (either the type itself or one of its constructors or destructors).
+
+%% \medskip\noindent {\bf Remark. } In other presentations of \CIC,
+%% the inductive objects are not seen as
+%% external declarations but as first-class terms. Usually the
+%% definitions are also completely ignored. This is a nice theoretical
+%% point of view but not so practical. An inductive definition is
+%% specified by a possibly huge set of declarations, clearly we want to
+%% share this specification among the various inductive objects and not
+%% to duplicate it. So the specification should exist somewhere and the
+%% various objects should refer to it. We choose one more level of
+%% indirection where the objects are just represented as constants and
+%% the environment gives the information on the kind of object the
+%% constant refers to.
+
+%% \medskip
+%% Our inductive objects will be manipulated as constants declared in the
+%% environment. This roughly corresponds to the way they are actually
+%% implemented in the \Coq\ system. It is simple to map this presentation
+%% in a theory where inductive objects are represented by terms.
\subsection{Terms}