A Certified Universal Gathering Algorithm for Oblivious Mobile Robots

Abstract : We present a new algorithm for the problem of universal gathering mobile oblivious robots (that is, starting from any initial configuration that is not bivalent, using any number of robots, the robot reach in a finite number of steps the same position, not known beforehand) without relying on a common chirality. We give very strong guaranties on the correctness of our algorithm by proving formally that it is correct, using the Coq proof assistant. To our knowledge, this is the first certified positive (and constructive) result in the context of oblivious mobile robots. It demonstrates both the effectiveness of the approach to obtain new algorithms that are truly generic, and its manageability since the amount of developed code remains human readable.
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http://hal.upmc.fr/hal-01349061
Contributeur : Sébastien Tixeuil <>
Soumis le : mardi 26 juillet 2016 - 15:53:10
Dernière modification le : vendredi 17 février 2017 - 16:10:26

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  • HAL Id : hal-01349061, version 1

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Pierre Courtieu, Lionel Rieg, Sébastien Tixeuil, Xavier Urbain. A Certified Universal Gathering Algorithm for Oblivious Mobile Robots. Distributed Computing (DISC), Sep 2016, Paris, France. 〈http://www.disc-conference.org/wp/disc2016/〉. 〈hal-01349061〉

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