The HR program forms concepts and makes
conjectures in domains of pure mathematics
and uses theorem prover OTTER and model
generator MACE to prove or disprove the conjectures.
HR measures properties of concepts
and assesses the theorems and proofs involving
them to estimate the interestingness of each
concept and employ a best first search. This
approach has led HR to the discovery of interesting
new mathematics and enables it to build
theories from just the axioms of finite algebras.