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Paper:

TR09-003 | 6th January 2009 00:00

Comments on ECCC Report TR06-133: The Resolution Width Problem is EXPTIME-Complete

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TR09-003
Authors: Alex Hertel, Alasdair Urquhart
Publication: 14th January 2009 11:52
Downloads: 1573
Keywords: 


Abstract:

We discovered a serious error in one of our previous submissions to ECCC and wish to make sure that this mistake is publicly known.

The main argument of the report TR06-133 is in error. The paper claims to prove the result of the title by reduction from the (Exists,k)-pebble game, shown to be EXPTIME-complete by Kolaitis and Panttaja. This note shows that the principal lemma is incorrect by providing a simple counter-example.



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