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Verification of the Redecoration Algorithm for Triangular Matrices

Ralph Matthes and Martin Strecker


Triangular matrices with a dedicated type for the diagonal elements can be profitably represented by a nested datatype, i.e., a heterogeneous family of inductive datatypes. These families are fully supported since the version 8.1 of the Coq theorem proving environment, released in 2007. Redecoration of triangular matrices has a succinct implementation in this representation, thus giving the challenge of proving it correct. This has been achieved within Coq, using also induction with measures. An axiomatic approach allowed a verification in the Isabelle theorem prover, giving insights about the differences of both systems.

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BibTeX Entry

  author = 	 {Ralph Matthes and Martin Strecker},
  title = 	 {Verification of the Redecoration Algorithm for Triangular Matrices},
  booktitle = 	 {Proc. TYPES 2007},
  pages =	 {125-141},
  year =	 2008,
  editor =	 {M. Miculan and I. Scagnetto and F. Honsell},
  volume =	 4941,
  series =	 {LNCS},
  publisher =	 {Springer}

Last modified: Thu Jul 30 11:01:07 CEST 2009