A Collection of Isabelle Programming Hacks
Achim D. Brucker 818438f2cf Isabelle 2018 is now the default version for the master branch. 3 months ago
Assert.thy Added reference to the isabelle-hacks repository. 5 months ago
Hiding_Type_Variables.thy Prefixed examples to avoid naming conflicts with consuming theories. 4 months ago
LICENSE Initial commit. 5 months ago
README.md Isabelle 2018 is now the default version for the master branch. 3 months ago
ROOT Renamed theories to comply to Isabelle's naming convention. 5 months ago


Isabelle Hacks

This project contains small Isabelle “hacks” that provide additional functionality to Isabelle or showcase specific functionality. The individual hacks usually consist out of a single theory file and all documentation is contained in that theory file. The master branch should work with the latest official release of Isabelle (Isabelle 2018, at time of writing), hacks for older versions might be available on a dedicated branch.

List of Isabelle Hacks

  • Assert.thy provides a new top level command assert that provides a simple way for specifying assertions that Isabelle checks while processing a theory.

  • Hiding_Type_Variables.thy provides print a setup for defining default type variables of type constructors. The default type variables can be hidden in output, e.g., ('a, 'b, 'c) foo is shown as (_) foo. This shorthand notation can also be used in input (using a parse translation), which (sometimes) helps to focus on the important parts of complex type declarations.


Main author: Achim D. Brucker


If not otherwise stated, all hacks are licensed under a 2-clause BSD-style license.

SPDX-License-Identifier: BSD-2-Clause

Master Repository

The master git repository for this project is hosted by the Software Assurance & Security Research Team at https://git.logicalhacking.com/adbrucker/isabelle-hacks.