INSTALLATION OF INDUCTIVE DEFINITIONS
HOL/ex/MT.thy: now mentions dependence upon Sum.thy
HOL/ex/Acc: new example, borrowed & adapted from ZF
HOL/ex/Simult, ex/Term: updated refs to Sexp intr rules
HOL/Sexp,List,LList,ex/Term: converted as follows
node *set -> item
Sexp -> sexp
LList_corec -> <self>
LList_ -> llist_
LList\> -> llist
List_case -> <self>
List_rec -> <self>
List_ -> list_
List\> -> list
Term_rec -> <self>
Term_ -> term_
Term\> -> term
HOL: Higher-Order Logic
This directory contains the Standard ML sources of the Isabelle system for
Higher-Order Logic. Important files include
ROOT.ML -- loads all source files. Enter an ML image containing Pure
Isabelle and type: use "ROOT.ML";
Makefile -- compiles the files under Poly/ML or SML of New Jersey
ex -- subdirectory containing examples. To execute them, enter an ML image
containing HOL and type: use "ex/ROOT.ML";
Subst -- subdirectory defining a theory of substitution and unification.
Useful references on Higher-Order Logic:
P. B. Andrews,
An Introduction to Mathematical Logic and Type Theory
(Academic Press, 1986).
J. Lambek and P. J. Scott,
Introduction to Higher Order Categorical Logic (CUP, 1986)