# Büchi Complementation

 Title: Büchi Complementation Author: Julian Brunner Submission date: 2017-10-19 Abstract: This entry provides a verified implementation of rank-based Büchi Complementation. The verification is done in three steps: Definition of odd rankings and proof that an automaton rejects a word iff there exists an odd ranking for it. Definition of the complement automaton and proof that it accepts exactly those words for which there is an odd ranking. Verified implementation of the complement automaton using the Isabelle Collections Framework. BibTeX: @article{Buchi_Complementation-AFP, author = {Julian Brunner}, title = {Büchi Complementation}, journal = {Archive of Formal Proofs}, month = oct, year = 2017, note = {\url{https://isa-afp.org/entries/Buchi_Complementation.html}, Formal proof development}, ISSN = {2150-914x}, } License: BSD License Depends on: Transition_Systems_and_Automata