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    <dc:creator>beastaugh</dc:creator><description><![CDATA[The story of David Seetapun's career after leaving mathematical logic.]]></description>
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<item rdf:about="https://cs.nyu.edu/pipermail/fom/1998-April/001833.html">
    <title>FOM: Slaman on long range goals of recursion theory</title>
    <dc:date>2018-05-13T21:37:15+00:00</dc:date>
    <link>https://cs.nyu.edu/pipermail/fom/1998-April/001833.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>computability tedslaman logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:fbb1aa8baabc/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://nautil.us/issue/45/power/this-man-is-about-to-blow-up-mathematics">
    <title>The Man Who Wants to Rescue Infinity</title>
    <dc:date>2017-02-24T16:03:16+00:00</dc:date>
    <link>http://nautil.us/issue/45/power/this-man-is-about-to-blow-up-mathematics</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic mathematics harveyfriedman</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:09c75e683c94/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://diaryofdoctorlogic.blogspot.de/2017/02/how-i-run-my-advanced-seminar.html">
    <title>Sara Uckelman: How I run my advanced seminar</title>
    <dc:date>2017-02-22T22:39:09+00:00</dc:date>
    <link>http://diaryofdoctorlogic.blogspot.de/2017/02/how-i-run-my-advanced-seminar.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic teaching</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:49a9362dcb19/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://diaryofdoctorlogic.blogspot.co.uk/2016/12/how-to-teach-introductory-logic-to.html">
    <title>Sara Uckelman on how to teach introductory logic to undergraduates</title>
    <dc:date>2016-12-19T01:56:06+00:00</dc:date>
    <link>http://diaryofdoctorlogic.blogspot.co.uk/2016/12/how-to-teach-introductory-logic-to.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic teaching</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:3975b2bdb311/</dc:identifier>
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</item>
<item rdf:about="http://diaryofdoctorlogic.blogspot.de/2016/11/why-do-we-teach-1st-year-philosophers.html">
    <title>Diary of Dr. Logic: Why do we teach 1st-year philosophers intro logic?</title>
    <dc:date>2016-11-17T15:33:06+00:00</dc:date>
    <link>http://diaryofdoctorlogic.blogspot.de/2016/11/why-do-we-teach-1st-year-philosophers.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic teaching</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:b30778d57c76/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://selp.apnetwork.it/sito/userfiles/alessio/file/abstract-092012/Short%20Pulcini.pdf">
    <title>Untitled (http://selp.apnetwork.it/sito/userfiles/alessio/file/abstract-092012/Short%20Pulcini.pdf)</title>
    <dc:date>2016-10-06T03:15:52+00:00</dc:date>
    <link>http://selp.apnetwork.it/sito/userfiles/alessio/file/abstract-092012/Short%20Pulcini.pdf</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA["Deflationism About Incompleteness and the ω-Rule", M. Piazza, G. Pulcini.



#math #logic #philosophy]]></description>
<dc:subject>philosophy math logic</dc:subject>
<dc:source>https://twitter.com/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:8f69d17d2c51/</dc:identifier>
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</item>
<item rdf:about="http://arxiv.org/pdf/1603.01342v1.pdf">
    <title>Untitled (http://arxiv.org/pdf/1603.01342v1.pdf)</title>
    <dc:date>2016-03-07T22:27:31+00:00</dc:date>
    <link>http://arxiv.org/pdf/1603.01342v1.pdf</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA["Proof-theoretic strengths of weak theories for positive inductive definitions", T. Arai.



#math #logic]]></description>
<dc:subject>math logic</dc:subject>
<dc:source>https://twitter.com/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:935e54262dc2/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.iep.utm.edu/lindenba/">
    <title>Lindenbaum, Adolf | Internet Encyclopedia of Philosophy</title>
    <dc:date>2015-11-03T19:17:29+00:00</dc:date>
    <link>http://www.iep.utm.edu/lindenba/</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA["Adolf Lindenbaum", at the IEP.



#math #logic #history]]></description>
<dc:subject>history math logic</dc:subject>
<dc:source>https://twitter.com/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:936cc0089da8/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:history"/>
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</item>
<item rdf:about="http://richardzach.org/2015/10/27/herbrand-photograph-by-natascha-artin-brunswick/">
    <title>Herbrand Photograph by Natascha Artin Brunswick</title>
    <dc:date>2015-10-27T17:34:18+00:00</dc:date>
    <link>http://richardzach.org/2015/10/27/herbrand-photograph-by-natascha-artin-brunswick/</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA[RT @RrrichardZach: Herbrand photograph by Natascha Artin Brunswick  ]]></description>
<dc:subject>logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:d5f832fc9ff5/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://dorais.org/archives/650">
    <title>François G. Dorais: Generalized separation principles</title>
    <dc:date>2014-11-06T19:33:50+00:00</dc:date>
    <link>http://dorais.org/archives/650</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>reversemathematics computability logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:70a56eaebfd7/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:reversemathematics"/>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://boolesrings.org/victoriagitman/2014/10/23/separating-the-choice-scheme-from-the-parameter-free-choice-scheme-in-second-order-arithmetic/">
    <title>Victoria Gitman: Separating the choice scheme from the parameter-free choice scheme in second-order arithmetic</title>
    <dc:date>2014-11-06T19:33:22+00:00</dc:date>
    <link>http://boolesrings.org/victoriagitman/2014/10/23/separating-the-choice-scheme-from-the-parameter-free-choice-scheme-in-second-order-arithmetic/</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>reversemathematics logic settheory</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:b4e1f83285e1/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.cs.nyu.edu/pipermail/fom/2002-July/005699.html">
    <title>FOM: Omega logic references by Allen Hazen</title>
    <dc:date>2014-03-23T12:08:19+00:00</dc:date>
    <link>http://www.cs.nyu.edu/pipermail/fom/2002-July/005699.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic reversemathematics mostowski fom</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:f1b4bf270a22/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/59262/induction-the-infinitude-of-the-primes-and-workaday-number-theory">
    <title>Induction, the infinitude of the primes, and workaday number theory | MathOverflow</title>
    <dc:date>2013-09-30T22:28:37+00:00</dc:date>
    <link>http://mathoverflow.net/questions/59262/induction-the-infinitude-of-the-primes-and-workaday-number-theory</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic numbertheory mathematics primes</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:40359e128692/</dc:identifier>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:primes"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://tigerneil.wordpress.com/2012/07/13/a-brief-history-of-logic-at-ucla/">
    <title>A brief history of logic at UCLA</title>
    <dc:date>2013-09-14T22:38:18+00:00</dc:date>
    <link>http://tigerneil.wordpress.com/2012/07/13/a-brief-history-of-logic-at-ucla/</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic history academia ucla caltech losangeles settheory computability</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:9f5405c1c041/</dc:identifier>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.stanford.edu/~psuppes/autobio3.html">
    <title>Autobiography of Patrick Suppes, p. 3</title>
    <dc:date>2013-09-13T15:57:23+00:00</dc:date>
    <link>http://www.stanford.edu/~psuppes/autobio3.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic philosophy academia learning tarski</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:6eaaeb84b276/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:learning"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:tarski"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://math.stackexchange.com/questions/468043/examples-of-statements-which-are-true-but-not-provable">
    <title>Examples of statements which are true but not provable | Mathematics Stack Exchange</title>
    <dc:date>2013-08-17T11:27:16+00:00</dc:date>
    <link>http://math.stackexchange.com/questions/468043/examples-of-statements-which-are-true-but-not-provable</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA[Nice answer by Andres Caicedo.]]></description>
<dc:subject>mathematics logic incompleteness</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:57d6fb911862/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
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</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://dorais.org/archives/1080">
    <title>Scheming schemes… | François G. Dorais</title>
    <dc:date>2013-08-12T15:08:54+00:00</dc:date>
    <link>http://dorais.org/archives/1080</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA[Fantastic article by François G. Dorais on the pitfalls of model theory in weak systems of second order arithmetic. ]]></description>
<dc:subject>reversemathematics settheory logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:9e602b455207/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:reversemathematics"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/138979/who-first-proved-theres-an-omega-model-of-mathsfwkl-0-in-which-all-sets">
    <title>Who first proved there's an $omega$-model of $mathsf{WKL}_0$ in which all sets are low? | MathOverflow</title>
    <dc:date>2013-08-11T12:56:09+00:00</dc:date>
    <link>http://mathoverflow.net/questions/138979/who-first-proved-theres-an-omega-model-of-mathsfwkl-0-in-which-all-sets</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA[Really nice argument in the final paragraph of Carl Mummert's argument.]]></description>
<dc:subject>reversemathematics logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:e0e5f5fff15f/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:reversemathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/98763/godels-incompleteness-can-the-diagonalization-be-done-in-computation-rather-th?rq=1">
    <title>Godel's incompleteness: can the diagonalization be done in computation rather than logic? | MathOverflow</title>
    <dc:date>2013-08-09T16:46:48+00:00</dc:date>
    <link>http://mathoverflow.net/questions/98763/godels-incompleteness-can-the-diagonalization-be-done-in-computation-rather-th?rq=1</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>mathematics logic computability</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:3d1b5c05013c/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:computability"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://jeff560.tripod.com/set.html">
    <title>Earliest Uses of Symbols of Set Theory and Logic</title>
    <dc:date>2013-06-19T16:34:58+00:00</dc:date>
    <link>http://jeff560.tripod.com/set.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>history logic mathematics symbols</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:5dd7389d7088/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:history"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:symbols"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/128618/deriving-konigs-lemma-directly-from-infinite-ramseys-theorem-for-triples">
    <title>Deriving Konig's Lemma directly from Infinite Ramsey's Theorem for triples - MathOverflow</title>
    <dc:date>2013-04-27T21:33:08+00:00</dc:date>
    <link>http://mathoverflow.net/questions/128618/deriving-konigs-lemma-directly-from-infinite-ramseys-theorem-for-triples</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>mathematics reversemathematics logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:97c460e43b13/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.math.psu.edu/simpson/sosoa/update-050630.html">
    <title>Reverse mathematics: a bibliographical update (Steve Simpson, 2005)</title>
    <dc:date>2013-03-11T11:40:21+00:00</dc:date>
    <link>http://www.math.psu.edu/simpson/sosoa/update-050630.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>reversemathematics research phd logic mathematics computability</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:d41de792a1d6/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:reversemathematics"/>
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	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:computability"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.uwgb.edu/dutchs/symmetry/aperiod.htm">
    <title>Aperiodic Tilings</title>
    <dc:date>2013-02-18T08:22:12+00:00</dc:date>
    <link>http://www.uwgb.edu/dutchs/symmetry/aperiod.htm</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>mathematics tilings logic computability symmetry</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:7570511ec472/</dc:identifier>
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<item rdf:about="http://faculty.baruch.cuny.edu/lkirby/">
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<item rdf:about="http://johnmacfarlane.net/church.html">
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<item rdf:about="http://www.cs.nyu.edu/pipermail/fom/1999-September/003405.html">
    <title>FOM: 61:Finitist proofs of conservation (Harvey Friedman)</title>
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<item rdf:about="http://www.cs.nyu.edu/pipermail/fom/1999-November/003463.html">
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    <dc:date>2012-09-27T16:47:32+00:00</dc:date>
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<item rdf:about="http://ncatlab.org/nlab/show/ultrafilter+theorem">
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    <title>Z_2 versus second-order PA - MathOverflow</title>
    <dc:date>2012-08-17T12:04:54+00:00</dc:date>
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<item rdf:about="http://stackoverflow.com/questions/11406786/what-is-the-combinatory-logic-equivalent-of-intuitionistic-type-theory">
    <title>What is the combinatory logic equivalent of intuitionistic type theory? - Stack Overflow</title>
    <dc:date>2012-08-03T20:44:11+00:00</dc:date>
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<item rdf:about="http://plato.stanford.edu/entries/logic-games/">
    <title>Logic and Games (Stanford Encyclopedia of Philosophy)</title>
    <dc:date>2012-07-28T19:23:45+00:00</dc:date>
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<item rdf:about="http://mathoverflow.net/questions/74014/whats-a-magical-theorem-in-logic">
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    <dc:date>2012-06-26T07:04:16+00:00</dc:date>
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<item rdf:about="http://logitext.ezyang.scripts.mit.edu/logitext.fcgi/tutorial">
    <title>Interactive Tutorial of the Sequent Calculus</title>
    <dc:date>2012-05-22T16:39:29+00:00</dc:date>
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<item rdf:about="http://school.maths.uwa.edu.au/~berwin/humour/invalid.proofs.html">
    <title>Invalid techniques of proof</title>
    <dc:date>2012-05-01T17:58:58+00:00</dc:date>
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<item rdf:about="http://math.stackexchange.com/questions/138136/how-does-adding-the-full-second-order-induction-scheme-affect-the-consistency-st">
    <title>How does adding the full second order induction scheme affect the consistency strength of subsystems of second order arithmetic? | MSE</title>
    <dc:date>2012-04-28T18:37:12+00:00</dc:date>
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<item rdf:about="http://math.stackexchange.com/questions/129574/propositional-calculus-compactness-implies-completeness">
    <title>Propositional Calculus: Compactness implies Completeness?</title>
    <dc:date>2012-04-09T13:00:17+00:00</dc:date>
    <link>http://math.stackexchange.com/questions/129574/propositional-calculus-compactness-implies-completeness</link>
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<item rdf:about="http://arxiv.org/abs/1204.0299">
    <title>[1204.0299] Undecidable problems: a sampler</title>
    <dc:date>2012-04-03T16:08:34+00:00</dc:date>
    <link>http://arxiv.org/abs/1204.0299</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic mathematics</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:3a50092ff4a4/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://m-phi.blogspot.com.br/2012/03/is-arithmetic-necessary-condition-for.html">
    <title>M-Phi: Is arithmetic a necessary condition for Gödel incompleteness?</title>
    <dc:date>2012-04-02T21:01:46+00:00</dc:date>
    <link>http://m-phi.blogspot.com.br/2012/03/is-arithmetic-necessary-condition-for.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>incompleteness gödel metamathematics logic mathematics arithmetic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:c565e782c342/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:incompleteness"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:gödel"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:metamathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://m-phi.blogspot.com.br/2012/03/proving-things.html">
    <title>Jeff Ketland: Proving Things</title>
    <dc:date>2012-04-01T21:27:35+00:00</dc:date>
    <link>http://m-phi.blogspot.com.br/2012/03/proving-things.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic mathematics</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:5ef7758f626c/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/92666/what-is-the-etymology-of-model">
    <title>What is the etymology of 'model'? - MathOverflow</title>
    <dc:date>2012-03-31T16:00:24+00:00</dc:date>
    <link>http://mathoverflow.net/questions/92666/what-is-the-etymology-of-model</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>history mathematics modeltheory logic tarski gödel</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:b101705a62ed/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:history"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:modeltheory"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:tarski"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:gödel"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.springerlink.com/content/j66507073537g184/">
    <title>Edgar Andrade-Lotero and Catarina Dutilh Novaes, 'Validity, the Squeezing Argument and Alternative Semantic Systems: the Case of Aristotelian Syllogistic', Journal of Philosophical Logic, volume 41, no. 2</title>
    <dc:date>2012-03-29T15:13:47+00:00</dc:date>
    <link>http://www.springerlink.com/content/j66507073537g184/</link>
    <dc:creator>beastaugh</dc:creator><description><![CDATA["We investigate the philosophical significance of the existence of different semantic systems with respect to which a given deductive system is sound and complete. Our case study will be Corcoran’s deductive system D for Aristotelian syllogistic and some of the different semantic systems for syllogistic that have been proposed in the literature. We shall prove that they are not equivalent, in spite of D being sound and complete with respect to each of them. Beyond the specific case of syllogistic, the goal is to offer a general discussion of the relations between informal notions—in this case, an informal notion of deductive validity—and logical apparatuses such as deductive systems and (model-theoretic or other) semantic systems that aim at offering technical, formal accounts of informal notions. Specifically, we will be interested in Kreisel’s famous ‘squeezing argument’; we shall ask ourselves what a plurality of semantic systems (understood as classes of mathematical structures) may entail for the cogency of specific applications of the squeezing argument. More generally, the analysis brings to the fore the need for criteria of adequacy for semantic systems based on mathematical structures. Without such criteria, the idea that the gap between informal and technical accounts of validity can be bridged is put under pressure."]]></description>
<dc:subject>philosophy logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:e2df0d905dc6/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:philosophy"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://math.stackexchange.com/questions/123566/independence-results-in-first-order-pa-and-second-order-pa">
    <title>Independence results in first-order PA and second-order PA</title>
    <dc:date>2012-03-23T16:51:59+00:00</dc:date>
    <link>http://math.stackexchange.com/questions/123566/independence-results-in-first-order-pa-and-second-order-pa</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>arithmetic metamathematics logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:8460970e527b/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:metamathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://m-phi.blogspot.com.br/2012/03/diagonalization-and-diagonal-lemma.html">
    <title>M-Phi: Diagonalization and the Diagonal Lemma</title>
    <dc:date>2012-03-22T22:21:53+00:00</dc:date>
    <link>http://m-phi.blogspot.com.br/2012/03/diagonalization-and-diagonal-lemma.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic metamathematics arithmetic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:482ab7b6dbdb/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:metamathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://golem.ph.utexas.edu/category/2011/10/weak_systems_of_arithmetic.html">
    <title>Weak Systems of Arithmetic | The n-Category Café</title>
    <dc:date>2012-03-22T00:53:29+00:00</dc:date>
    <link>http://golem.ph.utexas.edu/category/2011/10/weak_systems_of_arithmetic.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>arithmetic logic metamathematics prooftheory</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:35accb1b8551/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:metamathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:prooftheory"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/9864/presburger-arithmetic/10027#10027">
    <title>Presburger Arithmetic - MathOverflow</title>
    <dc:date>2012-03-22T00:53:13+00:00</dc:date>
    <link>http://mathoverflow.net/questions/9864/presburger-arithmetic/10027#10027</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>arithmetic metamathematics logic</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:a765e67cc99b/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:metamathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.nytimes.com/2012/03/14/us/ruth-barcan-marcus-philosopher-logician-dies-at-90.html?_r=3&amp;hpw">
    <title>Ruth Barcan Marcus, Philosopher and Logician, Dies at 90 — NYT</title>
    <dc:date>2012-03-14T12:41:33+00:00</dc:date>
    <link>http://www.nytimes.com/2012/03/14/us/ruth-barcan-marcus-philosopher-logician-dies-at-90.html?_r=3&amp;hpw</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>philosophy obituary logic modality</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:ce58ff3288d7/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:philosophy"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:obituary"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:modality"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://en.wikipedia.org/wiki/Analytical_hierarchy">
    <title>Analytical hierarchy - Wikipedia</title>
    <dc:date>2012-03-09T19:35:41+00:00</dc:date>
    <link>http://en.wikipedia.org/wiki/Analytical_hierarchy</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>analysis arithmetic logic mathematics settheory</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:8ad1b374b370/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:analysis"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:arithmetic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:mathematics"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:settheory"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://mathoverflow.net/questions/79030/calculus-of-binary-relations">
    <title>Calculus of Binary Relations - MathOverflow</title>
    <dc:date>2012-03-09T19:23:25+00:00</dc:date>
    <link>http://mathoverflow.net/questions/79030/calculus-of-binary-relations</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic algebra</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:f6c7a48575d1/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:algebra"/>
</rdf:Bag></taxo:topics>
</item>
<item rdf:about="http://www.maths.bris.ac.uk/~maaib/logic2010/files2010.html">
    <title>Andrey Bovykin's Bristol lectures in logic 2010</title>
    <dc:date>2012-03-09T17:29:49+00:00</dc:date>
    <link>http://www.maths.bris.ac.uk/~maaib/logic2010/files2010.html</link>
    <dc:creator>beastaugh</dc:creator><dc:subject>logic lecture</dc:subject>
<dc:source>https://pinboard.in/</dc:source>
<dc:identifier>https://pinboard.in/u:beastaugh/b:3245bf19998c/</dc:identifier>
<taxo:topics><rdf:Bag>	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:logic"/>
	<rdf:li rdf:resource="https://pinboard.in/u:beastaugh/t:lecture"/>
</rdf:Bag></taxo:topics>
</item>
</rdf:RDF>