HOL Zero’s Solutions for Pollack-Inconsistency

  • Mark Adams
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9807)


HOL Zero is a basic theorem prover that aims to achieve the highest levels of reliability and trustworthiness through careful design and implementation of its core components. In this paper, we concentrate on its treatment of concrete syntax, explaining how it manages to avoid problems suffered in other HOL systems related to the parsing and pretty printing of HOL types, terms and theorems, with the goal of achieving well-behaved parsing/printing and Pollack-consistency. Included are an explanation of how Hindley-Milner type inference is adapted to cater for variable-variable overloading, and how terms are minimally annotated with types for unambiguous printing.


Formal Proof Type Inference Concrete Syntax Interactive Proof Type Annotation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Proof Technologies LtdWorcesterUK
  2. 2.Radboud UniversityNijmegenThe Netherlands

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