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          <dc:title>Supercritical Space-Width Trade-Offs for Resolution</dc:title>
          <dc:creator>Berkholz, Christoph</dc:creator>
          <dc:creator>Nordström, Jakob</dc:creator>
          <dc:subject>Proof complexity</dc:subject>
          <dc:subject>resolution</dc:subject>
          <dc:subject>space</dc:subject>
          <dc:subject>width</dc:subject>
          <dc:subject>trade-offs</dc:subject>
          <dc:subject>supercritical</dc:subject>
          <dc:description>We show that there are CNF formulas which can be refuted in resolution in both small space and small width, but for which any small-width resolution proof must have space exceeding by far the linear worst-case upper bound. This significantly strengthens the space-width trade-offs in [Ben-Sasson 2009], and provides one more example of trade-offs in the "supercritical" regime above worst case recently identified by [Razborov 2016]. We obtain our results by using Razborov’s new hardness condensation technique and combining it with the space lower bounds in [Ben-Sasson and Nordström 2008].</dc:description>
          <dc:publisher>Schloss Dagstuhl – Leibniz-Zentrum für Informatik</dc:publisher>
          <dc:contributor>Christoph Berkholz and Jakob Nordström</dc:contributor>
          <dc:date>2016</dc:date>
          <dc:relation>Is Part Of LIPIcs, Volume 55, 43rd International Colloquium on Automata, Languages, and Programming (ICALP 2016)</dc:relation>
          <dc:type>InProceedings</dc:type>
          <dc:type>Text</dc:type>
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          <dc:identifier>doi:10.4230/LIPIcs.ICALP.2016.57</dc:identifier>
          <dc:identifier>urn:nbn:de:0030-drops-62266</dc:identifier>
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          <dc:language>eng</dc:language>
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