HOL: Higher-Order Logic with curried functions

This directory contains the Standard ML sources of the Isabelle system for Higher-Order Logic with curried functions. 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: