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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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<div id="title">Fredrik Engström</div>
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<div id="left"><img src="images/fredrik.jpg" alt="Image" class=
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<p>I'm a Senior Lecturer and Docent in Logic.</p>
<p>
I did my PhD in Mathematics at the University of Birmingham and Chalmers University of Technology in 2004 with a thesis on mathematical logic and models of Peano's arithmetic, under supervision of Richard W. Kaye. After which I worked as a Senior Lecturer at the Mid Sweden University in Sundsvall before moving to the University of Gothenburg in 2006. Between 2016 and 2021 I served as the Head of the Department of Philosophy, Linguistics and Theory of Science.
</p>
<h3>Papers</h3>
<ul>
<li>Invariance and Definability, with and without equality (with D. Bonnay) Notre Dame Journal of Formal Logic, Volume 59, Number 1 (2018), 109-133.
<a href="http://dx.doi.org/10.1215/00294527-2017-0020">doi:10.1215/00294527-2017-0020</a> [<a href="material/invariance_and_definability_arxiv.pdf">pdf</a>]</li>
<li>Dependence logic with generalized quantifiers: Axiomatizations (with J. Kontinen and J. Väänänen) Journal of computer and system sciences, Volume 88, Pages 90-102, 2017. <a href="http://dx.doi.org/10.1016/j.jcss.2017.03.010">doi:10.1016/j.jcss.2017.03.010</a>.
</li>
<li>Implicitly definable generalized quantifiers In <a href="http://www.flov.gu.se/digitalAssets/1497/1497175_ideesfixes.pdf">Idées Fixes. A Festschrift Dedicated to Chistian Bennet on the Occasion of His 60th Birtday</a> [<a href="material/implicit_definability.pdf">pdf</a>]</li>
<li>Generating Comprehensible Explanations in Description (with A. R. Nizamani and C. Strannegård) 27th International Workshop on Description Logics. Vienna, Austria, July 17-20, 2014, Vol-1193 s. 530-542. [<a href="http://gup.ub.gu.se/records/fulltext/199308/199308.pdf">pdf</a>]
</li>
<li>Symbolic Reasoning with Bounded Cognitive Resources (with A. R. Nizamani and C. Strannegård and O. Häggström) 36th Annual Conference of the Cognitive Science Society [<a href="http://gup.ub.gu.se/records/fulltext/199298/199298.pdf">pdf</a>]</li>
<li>Dependence logic with Generalized quantifiers: Axiomatizations (with J. Kontinen and J. Väänänen) In proceedings of WoLLIC 2013. <a href="http://dx.doi.org/10.1007/978-3-642-39992-3_14">doi:10.1007/978-3-642-39992-3_14</a> [<a href="material/completeness.pdf">pdf</a>] [<a href="material/completeness_wollic_final.pdf">Proceedings version</a>]</li>
<li>Bounded Kolmogorov Complexity Based on
Cognitive Models (with C. Strannegård, A. R. Nizamani, A. Sjöberg) In proceedings of AGI, 2013. <a href="http://dx.doi.org/10.1007/978-3-642-39521-5_14">doi:10.1007/978-3-642-39521-5_14i</a> [<a href="material/bounded_kolmogorov.pdf">pdf</a>]</li>
<li>Reasoning about truth in first-order logic (with C. Strannegård, A. R. Nizamani, and L. Rips) Journal of Logic, Language and Information, Volume 22, Issue 1, pp 115-137, 2013. <a href="http://dx.doi.org/10.1007/s10849-012-9168-y">doi:10.1007/s10849-012-9168-y</a> [<a href="material/Reasoning_about_truth_in_first-order_logic.pdf">pdf</a>]</li>
<li>Characterizing quantifier extensions of dependence logic (with J. Kontinen) Journal of Symbolic Logic vol 78, no 1, pp. 307-316, 2013. <a href="http://dx.doi.org/10.2178/jsl.7801210">doi:10.2178/jsl.7801210</a> [<a href="material/characterizing_dq.pdf">pdf</a>]</li>
<li>Generalized quantifiers in dependence logic. Journal of Logic, Language and Information vol 21, pp. 299-324, 2012. <a href="http://dx.doi.org/10.1007/s10849-012-9162-4">doi:10.1007/s10849-012-9162-4</a> [<a href="material/quantifiers_in_dl.pdf">pdf</a>]</li>
<li>Transplendent models: Expansions omitting a type (with Richard W. Kaye) Notre Dame Journal of Formal logic, vol. 53, no 3, pp. 423-438, 2012. <a href="http://dx.doi.org/10.1215/00294527-1716739">doi:10.1215/00294527-1716739</a> [<a href="material/transplendence.pdf">pdf</a>] </li>
<li>Non-isomorphism invariant Borel quantifiers (with Philipp Schlicht) Proc. of the AMS vol 139, no 12. <a href="http://dx.doi.org/10.1090/S0002-9939-2011-10849-9">doi:10.1090/S0002-9939-2011-10849-9</a> [<a href="material/IML-0910f-23.pdf">pdf</a>] </li>
<li>A note on standard systems and ultrafilters. Journal of Symbolic Logic, vol 73, no 3, pages 824-830 <a href="http://dx.doi.org/10.2178/jsl/1230396749">doi:10.2178/jsl/1230396749</a> [<a href="material/ssy_and_ultrafilters_web.pdf">pdf</a>]</li>
<li>Doctoral thesis: Expansions, omitting types, and standard
systems [<a href="material/docthesis.pdf">pdf</a>]</li>
<li>Licentiate thesis: Satisfaction classes in nonstandard models
of first-order arithmetic [<a href="material/licthesis.pdf">pdf</a>]</li>
</ul>
<!--<h3>Projects</h3>
<ul>
<li>Project leader of the project <a href="http://www.flov.gu.se/english/research/projects/dependence-in-formal-and-natural-languages/">Dependence in formal and natural languages</a> sponsored by the Swedish research council.</li>
<li>Member of the project <a href="http://www.illc.uva.nl/lint/">Logic for INTeraction</a>, sponspored by the Swedish research council and the European Science Foundation.</li>
<li>Member of the project <a href="http://flov.gu.se/english/research/projects/logical-reasoning-with-bounded-cognitive-resources">Logical reasoning with bounded cognitive resources</a>
sponsored by the department and the Swedish research council.</li>
</ul>
-->
<h3>Presentations</h3>
<ul>
<li>Generalized qantifiers and
team semantics (<a href="http://staff.math.su.se/rloukanova/LACompLing17.html">Workshop on Logic and Algorithms in Computational Linguistics 2017</a>, Stockholm, 2017-08-16) [<a href="material/engstrom_LACompLing2017.pdf">pdf</a>]</li>
<li>Team semantics for logics
with generalized qantifiers (Logic seminar, Göteborg, 2017-04-21) [<a href="material/engstrom_logsem2017.pdf">pdf</a>]</li>
<li>A maximal semantics for Dependence logic (<a href="http://www.helsinki.fi/lc2015/">Logic Colloquium 2015</a>, Helsinki, 2015-08-04) [<a href="material/engstrom_lc2015_handout.pdf">pdf</a>]</li>
<li>Dependence Logic and
Generalized Quantifiers (<a href="http://www.dagstuhl.de/15261">Logics for Dependence and Independence</a>, Dagstuhl, 2015-06-26) [<a href="material/engstrom_dagstuhl_2015_06.pdf">pdf</a>]</li>
<li>Implicitly definable generalized quantifiers (Filosofidagarna 2015, Linköping, 2015-06-13) [<a href="material/engstrom_talk_2015_06_13.pdf">pdf</a>]</li>
<li>Implicit definability as a
criterion for logicality (Logic seminar, Göteborg, 2014-03-14) [<a href="material/engstrom_2014_03.pdf">pdf</a>]</li>
<li>Description logics and explanations (Human reasoning seminar in Gothenburg, 2013-11-08) [<a href="material/2013_11_humres_description/engstrom_2013_11.html">html</a>]</li>
<li>Dependence and Axiomatizations (Logic seminar in Gothenburg, 2013-09-27) [<a href="material/engstrom_logsem_2013_09.pdf">pdf</a>]</li>
<li>Dependence logic with Generalized quantifiers: Axiomatizations (<a href="http://www3.mathematik.tu-darmstadt.de/wollic">WoLLIC</a>, Darmstadt, 2013-08-21) [<a href="material/engstrom_wollic2013.pdf">pdf</a>]</li>
<li>On logic and dependence (<a href="http://www.kth.se/abe/om-skolan/organisation/inst/philhist/phil/congress2013/">Swedish Congress of Philosophy</a>, Stockholm, 2013-06-16) [<a href="material/engstrom_filosofidagarna_2013.pdf">pdf</a>] </li>
<li>On logicality, invariance, and definability (<a href="http://www.fil.lu.se/institutionen/anknuten-verksamhet/konferenser/workshop-on-intensionality-in-mathematics/">Intensionality in Mathematics</a>, Lund, 2013-05-12) [<a href="material/engstrom_lund_2013.pdf">pdf</a>]</li>
<li>Models of arithmetic, standardness and expansions (Helsinki logic seminar, 2013-03-06) [<a href="material/engstrom_helsinki_2013.pdf">pdf</a>]</li>
<li>On Logicality (<a href="http://www.hf.uio.no/ifikk/english/research/projects/ppp/events/conferences/gothenburg-oslo-workshop-on-philosophical-logic.html">Gothenburg-Oslo Workshop on Philosophical Logic</a>, Oslo, 2012-12-01) [<a href="material/engstrom_oslo_2012.pdf">pdf</a>] </li>
<li>On logicality, invariance and definability (Logic seminar in Gothenburg, 2012-11-16)</li>
<li>What is logic? On logicality, invariance and definability (Uppsala Logic Seminar, 2012-11-15)</li>
<li>Invariance and definability, with or without equality (Scandinavian Logic Symposium 2012, Roskilde, 2012-08-20) [<a href="material/engstrom_roskilde_2012.pdf">pdf</a>]</li>
<li>Dependence logic with generalized quantifiers (Logic Colloquium 2012, Manchester) [<a href="material/engstrom_manchester_2012.pdf">pdf</a>]</li>
<li>Branching quantifiers, compositionally (Logic seminar Helsinki, 2012-01-11) [<a href="material/engstrom_helsinki_2012.pdf">pdf</a>]</li>
<li>Logical constants as uniquely definable quantifiers (Logic seminar Göteborg, 2011-09-30) [<a href="material/engstrom_feferman_talk_2011_09_30.pdf">pdf</a>]</li>
<li>Dependence in logic (ESSLLI, Ljubljana, 2011-08-07) [<a href="material/engstrom_esslli_2011.pdf">pdf</a>]</li>
<li>Dependence in Logic (Filosofidagarna, Göteborg, 2011-06-12) [<a href="material/engstrom_fd2011.pdf">pdf</a>]</li>
<li>Multivalued dependencies and generalized quantifiers
(LINT Workshop, Oxford, 2011-04-03) [<a href="material/oxford_2011.pdf">pdf</a>]</li>
<li>Generalized quantifiers in dependence logic
(Logikseminariet, Göteborg, 2011-02-04) [<a href="material/logicsem_2011_02_04.pdf">pdf</a>]</li>
<li>Non permutation invariant Borel quantifiers (<a href="http://www.math.helsinki.fi/logic/sellc-2010/">
Workshop on Logic, Language and Computation & The 9th International Conference on Logic and Cognition</a>, Guangzhou, China, 2010-12-05)
[<a href="material/engstrom_sellc.pdf">pdf</a>]</li>
<li>Classification problems and models of arithmetic
(Logikseminariet, Göteborg, 2010-10-08) [<a href="material/logsem_2010_10_08.pdf">pdf</a>]</li>
<li>Borel Quantifiers (Logikseminariet, Göteborg, 2010-05-01) [<a href="material/logsem_2010_05_01.pdf">pdf</a>]</li>
<li>Dependence and logicality (Logic and Language Technology seminar, Göteborg, 2010-04-16) [<a href="material/llt_2010_04.pdf">pdf</a>]</li>
<li>Logical constants: Invariance and definability (Institut Mittag-Leffler, Djursholm, 2009-10-22) [<a href="material/ml_okt_2009.pdf">pdf</a>]</li>
<li>Generalized quantifiers in dependence logic (Logikseminariet, Göteborg, 2009-03-27) [<a href="material/logicsem_2009_03_27.pdf">pdf</a>]</li>
<li>Is dependence logical? (Amsterdam, 2008-12-06) [<a href="material/amsterdam_2008_12.pdf">pdf</a>]</li>
<li>Spel och tal (Mittuniversitetet, Sundsvall, 2007-11-01) [<a href="material/surreella_miun_handout.pdf">pdf</a>]</li>
<li>Transplendent models: Omitting types in expansions
(Models and interpretations, Utrecht, 2007-04-04) [<a href="material/utrecht.pdf">pdf</a>]</li>
<li>Världens största tal (Filosofiska föreningen, Göteborg, 2007-03-21)
[<a href="material/filfor.pdf">pdf</a>]</li>
<li>Ickestandardanalys - ett didaktiskt knep? (Matematikbiennalen 2006,
Malmö, 2006-01-27) [<a href="material/biennalen.pdf">pdf</a>]</li>
<li><a href="http://nylogic.org/Conference/May2005/Saturday/ModelsOfPA/FredrikEngstroem">
Expansions omitting a type</a> (<a href="http://nylogic.org/Conference/May2005">New York City Logic
Conference</a>, New York, 2005-05-21) [<a href="material/ny2005.pdf">pdf</a>]</li>
<li><a href="http://nylogic.org/GradStudentConference/StFrancis2004/Sunday/SessionC1/FredrikEngstroem">
Variations on replendency and recursive saturation</a> (<a href="http://nylogic.org/GradStudentConference/StFrancis2004">New York
Graduate Student Logic Conference</a>, New York, 2004-10-20)
[<a href="material/ny2004.pdf">pdf</a>]</li>
<li><a href="http://www.math.ucla.edu/~asl/bsl/1102/1102-011.ps">Notions of resplendency for logics stronger than first-order
logic</a> (<a href="http://lc2004.unito.it/">Logic Colloquium 2004</a>,
Torino, 2004-07-27) [<a href="material/lc2004.pdf">pdf</a>]</li>
<li>A notion of recursive saturation for models of arithmetic with
the standard predicate (<a href="http://www.dm.unipi.it/%7Edinasso/marian2004/">M.ARI.AN. 2004</a>,
Pisa, 2004-06-25) [<a href="material/marian.pdf">pdf</a>]</li>
<li><a href="http://www.math.ucla.edu/%7Easl/bsl/1002/1002-005.ps">Omitting
types in expansions and related strong saturation properties</a>
(<a href="http://www.helsinki.fi/lc2003/">Logic Colloquium 2003,
Helsinki</a>, 2003-08-15) [<a href="material/lc2003.pdf">pdf</a>]</li>
<li>Satisfaction classes in nonstandard models of first-order
arithmetic (Licentiate Seminar in Chalmers, Göteborg, 2002-09-24)
[<a href="material/licsem.pdf">pdf</a>]</li>
<li>Resplendency and omitting types (British Logic Colloquium 2002
in Birmingham, 2002-09-13) [<a href="material/blc2002.pdf">pdf</a>]</li>
<li>Satisfaction classes or How to define truth in a non-standard
world (Logic seminar at the philosophy department, 2001-11-06) [<a href="material/satcl.pdf">pdf</a>]</li>
</ul>
<h3>Other stuff</h3>
<ul>
<li>A small english-swedish mathematical dictionary (originally by
Anders Vretblad,
Uppsala) [<a href="material/ordlista.pdf">pdf</a>]</li>
</ul>
</div>
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<h4 class="itemtitle">Links</h4>
<ul>
<li><a href=
"http://flov.gu.se/personal/fredrikengstrom/">
My offical homepage at GU</a></li>
<li><a href="http://gu.se/flov">Department of Philosophy, Linguistics and Theory of Science</a></li>
<!--
<li><a href="http://flov.gu.se/forskning/forskningsomraden/logik/">Logic at GU</a></li>
<li><a href="http://scholar.google.se/citations?user=DrXuB6oAAAAJ">I on Google Scholar</a>.</li>
<li><a href="http://gu-se.academia.edu/FredrikEngstr%C3%B6m">My page</a> at Academia.edu.</li>
<li><a href="https://www.researchgate.net/profile/Fredrik_Engstroem/">My page</a> at ResearchGate.</li>
<li><a href="http://gup.ub.gu.se/lists/publications/people/html/index.xsql?ids=4350&names=Engstr%C3%B6m%2C Fredrik %281977%29 %5B4350%5D&lyear=1900&hyear=2020&sort=year&format=default&rows=100">I in GUP</a> (Göteborgs Universitets Publikationer).</li>
<li><a href="http://arxiv.org/find/math/1/au:+Engstrom_F/0/1/0/all/0/1">I on arXiv.org</a>.</li>-->
</ul>
<h4>Contact details</h4>
<ul>
<li>My office is at Renströmsgatan 6.</li>
<li>Call me at +46-31-786 6335</li>
<li>
<table>
<tr>
<td>Department of Philosophy, Linguistics and Theory of Science</td>
</tr>
<tr>
<td>University of Gothenburg</td>
</tr>
<tr>
<td>Box 200</td>
</tr>
<tr>
<td>405 30 Göteborg</td>
</tr>
<tr>
<td>Sweden</td>
</tr>
</table>
</li>
<li>Send email to <a href="mailto:[email protected]">[email protected]</a>.</li>
</ul>
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