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When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.DISC.2017.12
URN: urn:nbn:de:0030-drops-79973
URL: http://drops.dagstuhl.de/opus/volltexte/2017/7997/
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Chan, David Yu Cheng ; Hadzilacos, Vassos ; Toueg, Sam

On the Number of Objects with Distinct Power and the Linearizability of Set Agreement Objects

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LIPIcs-DISC-2017-12.pdf (0.5 MB)


Abstract

We first prove that there are uncountably many objects with distinct computational powers. More precisely, we show that there is an uncountable set of objects such that for any two of them, at least one cannot be implemented from the other (and registers) in a wait-free manner. We then strengthen this result by showing that there are uncountably many linearizable objects with distinct computational powers. To do so, we prove that for all positive integers n and k, there is a linearizable object that is computationally equivalent to the k-set agreement task among n processes. To the best of our knowledge, these are the first linearizable objects proven to be computationally equivalent to set agreement tasks.

BibTeX - Entry

@InProceedings{chan_et_al:LIPIcs:2017:7997,
  author =	{David Yu Cheng Chan and Vassos Hadzilacos and Sam Toueg},
  title =	{{On the Number of Objects with Distinct Power and the Linearizability of Set Agreement Objects}},
  booktitle =	{31st International Symposium on Distributed Computing (DISC 2017)},
  pages =	{12:1--12:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-053-8},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{91},
  editor =	{Andr{\'e}a W. Richa},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2017/7997},
  URN =		{urn:nbn:de:0030-drops-79973},
  doi =		{10.4230/LIPIcs.DISC.2017.12},
  annote =	{Keywords: Set Agreement, Asynchronous System, Shared Memory}
}

Keywords: Set Agreement, Asynchronous System, Shared Memory
Seminar: 31st International Symposium on Distributed Computing (DISC 2017)
Issue Date: 2017
Date of publication: 05.10.2017


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