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biography vcard"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn">Jeffrey Shallit</div></th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Shallit-Oberwolfach.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Shallit-Oberwolfach.jpeg/220px-Shallit-Oberwolfach.jpeg" decoding="async" width="220" height="308" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/7/72/Shallit-Oberwolfach.jpeg 1.5x" data-file-width="286" data-file-height="400" /></a></span><div class="infobox-caption">Shallit in 2010</div></td></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data"><span style="display:none"> (<span class="bday">1957-10-17</span>) </span>October 17, 1957<span class="noprint ForceAgeToShow"> (age 67)</span><br /><div style="display:inline" class="birthplace"><a href="/wiki/Philadelphia,_Pennsylvania" class="mw-redirect" title="Philadelphia, Pennsylvania">Philadelphia, Pennsylvania</a>, U.S.</div></td></tr><tr><th scope="row" class="infobox-label">Alma mater</th><td class="infobox-data"><a href="/wiki/Princeton_University" title="Princeton University">Princeton University</a> (<a href="/wiki/B._A." class="mw-redirect" title="B. A.">BA</a>)<br /><a href="/wiki/University_of_California,_Berkeley" title="University of California, Berkeley">University of California, Berkeley</a> (<a href="/wiki/PhD" class="mw-redirect" title="PhD">PhD</a>)</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><b>Scientific career</b></td></tr><tr><th scope="row" class="infobox-label">Fields</th><td class="infobox-data category"><a href="/wiki/Formal_language_theory" class="mw-redirect" title="Formal language theory">Formal language theory</a><br /><a href="/wiki/Computational_number_theory" title="Computational number theory">Computational number theory</a></td></tr><tr><th scope="row" class="infobox-label">Institutions</th><td class="infobox-data"><a href="/wiki/University_of_Waterloo" title="University of Waterloo">University of Waterloo</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Thesis" title="Thesis">Thesis</a></th><td class="infobox-data"><i> Metric Theory of Pierce Expansions </i> <span style="font-size:97%;">(1983)</span></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Doctoral_advisor" title="Doctoral advisor">Doctoral advisor</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"> <ul><li><a href="/wiki/Manuel_Blum" title="Manuel Blum">Manuel Blum</a></li> <li><a href="/wiki/David_M._Goldschmidt" title="David M. Goldschmidt">David M. Goldschmidt</a></li></ul> </div></td></tr><tr style="display:none"><td colspan="2"> </td></tr></tbody></table> <p><b>Jeffrey Outlaw Shallit</b> (born October 17, 1957) is an American computer scientist and mathematician. He is an active <a href="/wiki/Number_theory" title="Number theory">number theorist</a> and a noted critic of <a href="/wiki/Intelligent_design" title="Intelligent design">intelligent design</a>. He is married to <a href="/wiki/Anna_Lubiw" title="Anna Lubiw">Anna Lubiw</a>, also a computer scientist. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Early_life_and_education">Early life and education</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=1" title="Edit section: Early life and education"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Shallit was born in <a href="/wiki/Philadelphia,_Pennsylvania" class="mw-redirect" title="Philadelphia, Pennsylvania">Philadelphia, Pennsylvania</a>, in 1957. His father was journalist <a href="/wiki/Joseph_Shallit" title="Joseph Shallit">Joseph Shallit</a>, the son of <a href="/wiki/Jewish" class="mw-redirect" title="Jewish">Jewish</a> immigrants from <a href="/wiki/Vitebsk" title="Vitebsk">Vitebsk</a>, <a href="/wiki/Russia" title="Russia">Russia</a> (now in <a href="/wiki/Belarus" title="Belarus">Belarus</a>). His mother was Louise Lee Outlaw Shallit, a writer. He has one brother, Jonathan Shallit, a music professor. </p><p>Shallit earned a <a href="/wiki/Bachelor_of_Arts" title="Bachelor of Arts">Bachelor of Arts</a> (B.A.) in <a href="/wiki/Mathematics" title="Mathematics">mathematics</a> from <a href="/wiki/Princeton_University" title="Princeton University">Princeton University</a> in June 1979. He received a <a href="/wiki/Doctor_of_Philosophy" title="Doctor of Philosophy">Ph.D.</a>, also in mathematics, from the <a href="/wiki/University_of_California,_Berkeley" title="University of California, Berkeley">University of California, Berkeley</a>, in June 1983. His doctoral thesis was entitled <i>Metric Theory of Pierce Expansions</i> and his advisor was <a href="/wiki/Manuel_Blum" title="Manuel Blum">Manuel Blum</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Advocacy">Advocacy</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=2" title="Edit section: Advocacy"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Since 1996, Shallit has held the position of Vice-President of <a href="/wiki/Electronic_Frontier_Canada" title="Electronic Frontier Canada">Electronic Frontier Canada</a>. </p><p>In 1997, he gained attention for the publication on the Internet of <i>Holocaust Revised: Lies of Our Times</i> (also called the <i>Shallit Report</i>), a reprint of an article he had written for a Waterloo student publication in 1993, which detailed the backgrounds and past statements of various persons whom he accused of being <a href="/wiki/Holocaust_denial" title="Holocaust denial">Holocaust deniers</a>, notably <a href="/wiki/David_Irving" title="David Irving">David Irving</a>, <a href="/wiki/Fred_A._Leuchter" title="Fred A. Leuchter">Fred A. Leuchter</a>, and <a href="/wiki/Eustace_Mullins" title="Eustace Mullins">Eustace Mullins</a>. This triggered a public exchange of letters between him and Irving. </p><p>Shallit has been a critic of the work of <a href="/wiki/William_Dembski" class="mw-redirect" title="William Dembski">William Dembski</a> promoting intelligent design. He has coauthored a paper with <a href="/wiki/Wesley_Elsberry" class="mw-redirect" title="Wesley Elsberry">Wesley Elsberry</a> demonstrating problems with Dembski's mathematical work,<sup id="cite_ref-rebut_3-0" class="reference"><a href="#cite_note-rebut-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and would have appeared as a witness opposing Dembski in the <a href="/wiki/Kitzmiller_v._Dover" class="mw-redirect" title="Kitzmiller v. Dover">Kitzmiller v. Dover</a> trial had Dembski not dropped out. </p> <div class="mw-heading mw-heading2"><h2 id="Professional_life">Professional life</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=3" title="Edit section: Professional life"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As of 2024<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Jeffrey_Shallit&action=edit">[update]</a></sup> Shallit is a Professor in the School of Computer Science at the <a href="/wiki/University_of_Waterloo" title="University of Waterloo">University of Waterloo</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and the editor-in-chief of the <i><a href="/wiki/Journal_of_Integer_Sequences" title="Journal of Integer Sequences">Journal of Integer Sequences</a></i>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> His primary academic interests are <a href="/wiki/Combinatorics_on_words" title="Combinatorics on words">combinatorics on words</a>, <a href="/wiki/Formal_languages" class="mw-redirect" title="Formal languages">formal languages</a>, <a href="/wiki/Automata_theory" title="Automata theory">automata theory</a>, and <a href="/wiki/Computational_number_theory" title="Computational number theory"> algorithmic number theory</a>. He has been recognized by the <a href="/wiki/Association_for_Computing_Machinery" title="Association for Computing Machinery">Association for Computing Machinery</a> as a Distinguished Scientist (2008). </p><p>His publications include the books <i>Algorithmic Number Theory</i> (with <a href="/wiki/Eric_Bach" title="Eric Bach">Eric Bach</a>), a noted text on <a href="/wiki/Algorithms" class="mw-redirect" title="Algorithms">algorithms</a>, <i>Automatic Sequences: Theory, Applications, Generalizations</i> (with <a href="/w/index.php?title=Jean-Paul_Allouche&action=edit&redlink=1" class="new" title="Jean-Paul Allouche (page does not exist)">Jean-Paul Allouche</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://fr.wikipedia.org/wiki/Jean-Paul_Allouche" class="extiw" title="fr:Jean-Paul Allouche">fr</a>]</span>), and <i>A Second Course in Formal Languages and Automata Theory</i>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/List_of_University_of_Waterloo_people" title="List of University of Waterloo people">List of University of Waterloo people</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://mathgenealogy.org/id.php?id=31748">Jeffrey Shallit</a> at the <a href="/wiki/Mathematics_Genealogy_Project" title="Mathematics Genealogy Project">Mathematics Genealogy Project</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFMansour2022" class="citation journal cs1">Mansour, Toufik (2022). <a rel="nofollow" class="external text" href="https://ecajournal.haifa.ac.il/Volume2022/ECA2022_S3I5.pdf">"Interview with Jeffrey Shallit"</a> <span class="cs1-format">(PDF)</span>. <i>Journal of Enumerative Combinatorics and Applications</i>. <b>2</b> (2): Interview #S3I5. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.54550%2FECA2022V2S2I5">10.54550/ECA2022V2S2I5</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Enumerative+Combinatorics+and+Applications&rft.atitle=Interview+with+Jeffrey+Shallit&rft.volume=2&rft.issue=2&rft.pages=Interview+%23S3I5&rft.date=2022&rft_id=info%3Adoi%2F10.54550%2FECA2022V2S2I5&rft.aulast=Mansour&rft.aufirst=Toufik&rft_id=https%3A%2F%2Fecajournal.haifa.ac.il%2FVolume2022%2FECA2022_S3I5.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJeffrey+Shallit" class="Z3988"></span></span> </li> <li id="cite_note-rebut-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-rebut_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShallitWesley_Elsberry2003" class="citation journal cs1">Shallit, Jeffrey; Wesley Elsberry (November 16, 2003). <a rel="nofollow" class="external text" href="http://www.talkreason.org/articles/eandsdembski.pdf">"Information Theory, Evolutionary Computation, and Dembski's "Complex Specified Information"<span class="cs1-kern-right"></span>"</a> <span class="cs1-format">(PDF)</span>. <i>Talkreason.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">September 26,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Talkreason.org&rft.atitle=Information+Theory%2C+Evolutionary+Computation%2C+and+Dembski%27s+%22Complex+Specified+Information%22&rft.date=2003-11-16&rft.aulast=Shallit&rft.aufirst=Jeffrey&rft.au=Wesley+Elsberry&rft_id=http%3A%2F%2Fwww.talkreason.org%2Farticles%2Feandsdembski.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJeffrey+Shallit" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://cs.uwaterloo.ca/about/people/group/49">"Professors"</a>. <i>Cheriton School of Computer Science, University of Waterloo</i><span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Cheriton+School+of+Computer+Science%2C+University+of+Waterloo&rft.atitle=Professors&rft_id=https%3A%2F%2Fcs.uwaterloo.ca%2Fabout%2Fpeople%2Fgroup%2F49&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJeffrey+Shallit" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://cs.uwaterloo.ca/journals/JIS/">"Journal of Integer Sequences"</a>. Cheriton School of Computer Science<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Journal+of+Integer+Sequences&rft.pub=Cheriton+School+of+Computer+Science&rft_id=https%3A%2F%2Fcs.uwaterloo.ca%2Fjournals%2FJIS%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJeffrey+Shallit" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Jeffrey_Shallit&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.cs.uwaterloo.ca/~shallit/">Home page of Jeffrey O. Shallit</a></li> <li><a rel="nofollow" class="external text" href="http://recursed.blogspot.com/">Shallit's blog, Recursivity</a></li> <li><a rel="nofollow" class="external text" href="http://www.efc.ca/">Electronic Frontier Canada</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120204075352/http://www.efc.ca/">Archived</a> 2012-02-04 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="http://www.nizkor.org/hweb/people/s/shallit-jeffrey/">Holocaust Revised: Lies of our Times</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20061002021724/http://www.nizkor.org/hweb/people/s/shallit-jeffrey/">Archived</a> 2006-10-02 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist 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