<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T01:48:00Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/124241" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/124241</identifier><datestamp>2026-06-06T00:55:21Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131023</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Erik Demaine.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Ferreira Antunes Filho, Ivan Tadeu.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department" lang="en_US">Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2020-03-24T15:35:55Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2020-03-24T15:35:55Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">2019</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">2019</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="uri">https://hdl.handle.net/1721.1/124241</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">1145012343</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Cataloged from student-submitted PDF version of thesis.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (pages 65-70) and index.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">We survey variants of the Boolean Satisfiability problem from over the years and organize them in what we believe to be the most comprehensive list of known results in SAT variants. We propose a new notation to specify them so that the problems can be compared with no ambiguities, and so that new problems can be more easily identified. We also show hardness of many new variants of SAT including a characterization of Sin-k SAT, hardness of variants of MAX Planar SAT, partial characterization of XNF SAT, consequences of the Ordered Planar Dichotomy, and hardness of NAE SAT variants with a bounded number of variable occurrences, in particular NAE EkSAT-k. This is joint work with Aviv Adler, Leo Alcock, Anastasiia Alokhina, Joshua Ani, Jeffrey Bosboom, Erik Demaine, Yevhenii Diomidov, Jonathan Gabor, Yuzhou Gu, Linus Hamilton, Mirai Ikebuchi, Adam Hesterberg, Jayson Lynch, Zhezheng Luo, Xiao Mao, Kevin Sun, John Urschel, Yinzhan Xu, and Lillian Zhang.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Ivan Tadeu Ferreira Antunes Filho [and 19 others].</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">M.Eng.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="collection" lang="en_US">M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">72 pages</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.</dim:field>
   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Electrical Engineering and Computer Science.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Characterizing Boolean satisfiability variants</dim:field>
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   	&lt;Title>Characterizing Boolean satisfiability variants&lt;/Title>
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   	&lt;PublicationDate>2019&lt;/PublicationDate>
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        	&lt;DisplayName>Ferreira Antunes Filho, Ivan Tadeu.&lt;/DisplayName>
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   	&lt;Abstract>We survey variants of the Boolean Satisfiability problem from over the years and organize them in what we believe to be the most comprehensive list of known results in SAT variants. We propose a new notation to specify them so that the problems can be compared with no ambiguities, and so that new problems can be more easily identified. We also show hardness of many new variants of SAT including a characterization of Sin-k SAT, hardness of variants of MAX Planar SAT, partial characterization of XNF SAT, consequences of the Ordered Planar Dichotomy, and hardness of NAE SAT variants with a bounded number of variable occurrences, in particular NAE EkSAT-k. This is joint work with Aviv Adler, Leo Alcock, Anastasiia Alokhina, Joshua Ani, Jeffrey Bosboom, Erik Demaine, Yevhenii Diomidov, Jonathan Gabor, Yuzhou Gu, Linus Hamilton, Mirai Ikebuchi, Adam Hesterberg, Jayson Lynch, Zhezheng Luo, Xiao Mao, Kevin Sun, John Urschel, Yinzhan Xu, and Lillian Zhang.&lt;/Abstract>
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