In 2012, Lipton wrote a blog entry about a new algorithm for solving linear systems over finite fields by Prasad Raghavendra.

The link to Raghavendra's draft paper on the topic is now dead, and I can't find anything on the subject on Raghavendra's website.

Is the result correct? Is a write-up available anywhere?



2 Answers 2


The paper by Raghavendra is now also published and available here under the title:

Correlation Decay and Tractability of CSPs, appeared in the 43rd International Colloquium on Automata, Languages, and Programming (ICALP 2016).

A related article has appeared in the Electronic Colloquium on Computational Complexity, Report No. 7 (2015), available here.

  • 2
    $\begingroup$ Can you give details that will enable us to find the paper in the future if this link stops working? Maybe paper title, authors, and where published (if anywhere)? $\endgroup$
    – D.W.
    Commented Aug 28, 2017 at 22:26
  • $\begingroup$ The link is down, please could you tell us the complexity of this algorithm? $\endgroup$
    – juaninf
    Commented Apr 1, 2018 at 20:38
  • $\begingroup$ The Links still should both work, please try again! $\endgroup$
    – LeoW.
    Commented Apr 3, 2018 at 11:53

This is a paper that seems to improve upon the result. https://arxiv.org/pdf/1209.3995.pdf


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