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Created page with "'''Home * People * Jens Lieberum''' FILE:JensLieberum.jpg|border|right|thumb|link=http://icga.leidenuniv.nl/icga/games/amazons/OlympiadMedalWinners(Lorent..."
'''[[Main Page|Home]] * [[People]] * Jens Lieberum'''
[[FILE:JensLieberum.jpg|border|right|thumb|link=http://icga.leidenuniv.nl/icga/games/amazons/OlympiadMedalWinners(LorentzLieberumDeKoning).JPG| Jens Lieberum <ref>[http://icga.leidenuniv.nl/icga/games/amazons/ ICGA: Amazons] by [[Richard J. Lorentz]]</ref> ]]
'''Jens Lieberum''',<br/>
a German [https://en.wikipedia.org/wiki/Topology topologist], chess player, and as [[Amazons]] programmer author of [https://www.game-ai-forum.org/icga-tournaments/program.php?id=253 Amazong],
two times Gold medal winner of the [[7th Computer Olympiad#Amazons|Computer Olympiad 2002]] and [[8th Computer Olympiad#Amazons|2003]].
Jens Lieberum received his Ph.D. in mathematics in 1998 in the field of [https://en.wikipedia.org/wiki/Knot_theory Knot theory] on the topic of [https://en.wikipedia.org/wiki/Finite_type_invariant#The_universal_Vassiliev_invariant Vassiliev invariants] <ref>[[Mathematician#VictorVassiliev|Mathematician | Victor Anatolyevich Vassiliev]]</ref> at [https://en.wikipedia.org/wiki/Louis_Pasteur_University Louis Pasteur University] under supervision of [[Mathematician#ChristianKassel|Christian Kassel]].
He further researched and published in that field of [https://en.wikipedia.org/wiki/Knot_invariant Knot invariants] and [https://en.wikipedia.org/wiki/Knot_polynomial Knot polynomial] on [https://en.wikipedia.org/wiki/Quantum_invariant Quantum invariant],
[https://en.wikipedia.org/wiki/Quasi-bialgebra Quasi-bialgebra] and [https://en.wikipedia.org/wiki/Lie_superalgebra Lie superalgebra],
[https://en.wikipedia.org/wiki/HOMFLY_polynomial HOMFLY polynomial], [https://en.wikipedia.org/wiki/Kauffman_polynomial Kauffman polynomial] <ref>[[Mathematician#LouisKauffman|Mathematician | Louis Kauffman]]</ref> and [https://en.wikipedia.org/wiki/Alexander_polynomial Alexander polynomial] <ref>[[Mathematician#JWAlexander|Mathematician | James Waddell Alexander]]</ref>,
and the [https://en.wikipedia.org/wiki/Skein_relation Skein relation], publications categorized by [https://en.wikipedia.org/wiki/ArXiv arXiv] under [https://en.wikipedia.org/wiki/Quantum_algebra Quantum algebra].
=Selected Publications=
<ref>[https://dblp.uni-trier.de/pers/hd/l/Lieberum:Jens dblp: Jens Lieberum]</ref>
==1997 ...==
* [[Jens Lieberum]] ('''1997'''). ''Chromatic weight systems and the corresponding knot invariants''. [https://arxiv.org/abs/q-alg/9701013 arXiv:q-alg/9701013]
* [[Jens Lieberum]] ('''1997'''). ''On Vassiliev Invariants not Coming from Semisimple Lie Algebras''. [https://en.wikipedia.org/wiki/Journal_of_Knot_Theory_and_Its_Ramifications Journal of Knot Theory and Its Ramifications], Vol. 8, No. 5, [https://arxiv.org/abs/q-alg/9706005 arXiv:q-alg/9706005]
* [[Jens Lieberum]] ('''1998'''). ''Invariants de Vassiliev pour les entrelacs dans S³ et dans les variétés de dimension trois''. Ph.D. thesis, [https://en.wikipedia.org/wiki/Louis_Pasteur_University Louis Pasteur University], advisor [[Mathematician#ChristianKassel|Christian Kassel]]
* [[Jens Lieberum]] ('''1998, 2000'''). ''The number of independent Vassiliev invariants in the Homfly and Kauffman polynomials''. [https://arxiv.org/abs/math/9806064 arXiv:math/9806064], [https://en.wikipedia.org/wiki/German_Mathematical_Society Documenta Mathematica], Vol. 5
* [[Jens Lieberum]] ('''1999'''). ''Skein modules of links in cylinders over surfaces''. [https://arxiv.org/abs/math/9911174 arXiv:math/9911174]
==2000 ...==
* [[Jens Lieberum]] ('''2000'''). ''The LMO-invariant of 3-manifolds of rank one and the Alexander polynomial''. [https://arxiv.org/abs/math/0002040 arXiv:math/0002040]
* [[Jens Lieberum]] ('''2001'''). ''Universal Vassiliev invariants of links in coverings of 3-manifolds''. [https://arxiv.org/abs/math/0105019 arXiv:math/0105019]
* [[Jens Lieberum]] ('''2002'''). ''The Drinfeld associator of gl(1|1)''. [https://arxiv.org/abs/math/0204346 arXiv:math/0204346] <ref>[[Mathematician#VDrinfeld|Mathematician | Vladimir Drinfeld]]</ref>
* [[Ingo Althöfer]], [[Jens Lieberum]], [[Johan de Koning]], [[Stefan Meyer-Kahlen]], [[Thomas Rolle]], [[Jörg Sameith]] ('''2003'''). ''Five visualizations of the k-best mode.'' [[ICGA Journal#26_3|ICGA Journal, Vol. 26, No. 3]] <ref>[https://althofer.de/k-best-visualisations.html K-Best Visualisations] by [[Ingo Althöfer]]</ref>
* [[Jens Lieberum]] ('''2003'''). ''An Evaluation Function for the Game of Amazons''. [[Advances in Computer Games 10]]
* [[Jens Lieberum]] ('''2005'''). ''[https://www.sciencedirect.com/science/article/pii/S0304397505005979 An evaluation function for the game of amazons]''. [https://en.wikipedia.org/wiki/Theoretical_Computer_Science_(journal) Theoretical Computer Science], Vol. 349, No. 2
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/person.php?id=244 Jens Lieberum's ICGA Tournaments]
* [https://genealogy.math.ndsu.nodak.edu/id.php?id=56059 The Mathematics Genealogy Project - Jens Lieberum]
* [http://ratings.fide.com/card.phtml?event=4634039 Lieberum, Jens, Dr. FIDE Chess Profile]
* [https://www.365chess.com/players/Jens_Lieberum Jens Lieberum chess games - 365Chess.com]
=References=
<references />
'''[[People|Up one level]]'''
[[Category:Chess Player|Lieberum]]
[[Category:Amazons Programmer|Lieberum]]
[[Category:Mathematician|Lieberum]]
[[FILE:JensLieberum.jpg|border|right|thumb|link=http://icga.leidenuniv.nl/icga/games/amazons/OlympiadMedalWinners(LorentzLieberumDeKoning).JPG| Jens Lieberum <ref>[http://icga.leidenuniv.nl/icga/games/amazons/ ICGA: Amazons] by [[Richard J. Lorentz]]</ref> ]]
'''Jens Lieberum''',<br/>
a German [https://en.wikipedia.org/wiki/Topology topologist], chess player, and as [[Amazons]] programmer author of [https://www.game-ai-forum.org/icga-tournaments/program.php?id=253 Amazong],
two times Gold medal winner of the [[7th Computer Olympiad#Amazons|Computer Olympiad 2002]] and [[8th Computer Olympiad#Amazons|2003]].
Jens Lieberum received his Ph.D. in mathematics in 1998 in the field of [https://en.wikipedia.org/wiki/Knot_theory Knot theory] on the topic of [https://en.wikipedia.org/wiki/Finite_type_invariant#The_universal_Vassiliev_invariant Vassiliev invariants] <ref>[[Mathematician#VictorVassiliev|Mathematician | Victor Anatolyevich Vassiliev]]</ref> at [https://en.wikipedia.org/wiki/Louis_Pasteur_University Louis Pasteur University] under supervision of [[Mathematician#ChristianKassel|Christian Kassel]].
He further researched and published in that field of [https://en.wikipedia.org/wiki/Knot_invariant Knot invariants] and [https://en.wikipedia.org/wiki/Knot_polynomial Knot polynomial] on [https://en.wikipedia.org/wiki/Quantum_invariant Quantum invariant],
[https://en.wikipedia.org/wiki/Quasi-bialgebra Quasi-bialgebra] and [https://en.wikipedia.org/wiki/Lie_superalgebra Lie superalgebra],
[https://en.wikipedia.org/wiki/HOMFLY_polynomial HOMFLY polynomial], [https://en.wikipedia.org/wiki/Kauffman_polynomial Kauffman polynomial] <ref>[[Mathematician#LouisKauffman|Mathematician | Louis Kauffman]]</ref> and [https://en.wikipedia.org/wiki/Alexander_polynomial Alexander polynomial] <ref>[[Mathematician#JWAlexander|Mathematician | James Waddell Alexander]]</ref>,
and the [https://en.wikipedia.org/wiki/Skein_relation Skein relation], publications categorized by [https://en.wikipedia.org/wiki/ArXiv arXiv] under [https://en.wikipedia.org/wiki/Quantum_algebra Quantum algebra].
=Selected Publications=
<ref>[https://dblp.uni-trier.de/pers/hd/l/Lieberum:Jens dblp: Jens Lieberum]</ref>
==1997 ...==
* [[Jens Lieberum]] ('''1997'''). ''Chromatic weight systems and the corresponding knot invariants''. [https://arxiv.org/abs/q-alg/9701013 arXiv:q-alg/9701013]
* [[Jens Lieberum]] ('''1997'''). ''On Vassiliev Invariants not Coming from Semisimple Lie Algebras''. [https://en.wikipedia.org/wiki/Journal_of_Knot_Theory_and_Its_Ramifications Journal of Knot Theory and Its Ramifications], Vol. 8, No. 5, [https://arxiv.org/abs/q-alg/9706005 arXiv:q-alg/9706005]
* [[Jens Lieberum]] ('''1998'''). ''Invariants de Vassiliev pour les entrelacs dans S³ et dans les variétés de dimension trois''. Ph.D. thesis, [https://en.wikipedia.org/wiki/Louis_Pasteur_University Louis Pasteur University], advisor [[Mathematician#ChristianKassel|Christian Kassel]]
* [[Jens Lieberum]] ('''1998, 2000'''). ''The number of independent Vassiliev invariants in the Homfly and Kauffman polynomials''. [https://arxiv.org/abs/math/9806064 arXiv:math/9806064], [https://en.wikipedia.org/wiki/German_Mathematical_Society Documenta Mathematica], Vol. 5
* [[Jens Lieberum]] ('''1999'''). ''Skein modules of links in cylinders over surfaces''. [https://arxiv.org/abs/math/9911174 arXiv:math/9911174]
==2000 ...==
* [[Jens Lieberum]] ('''2000'''). ''The LMO-invariant of 3-manifolds of rank one and the Alexander polynomial''. [https://arxiv.org/abs/math/0002040 arXiv:math/0002040]
* [[Jens Lieberum]] ('''2001'''). ''Universal Vassiliev invariants of links in coverings of 3-manifolds''. [https://arxiv.org/abs/math/0105019 arXiv:math/0105019]
* [[Jens Lieberum]] ('''2002'''). ''The Drinfeld associator of gl(1|1)''. [https://arxiv.org/abs/math/0204346 arXiv:math/0204346] <ref>[[Mathematician#VDrinfeld|Mathematician | Vladimir Drinfeld]]</ref>
* [[Ingo Althöfer]], [[Jens Lieberum]], [[Johan de Koning]], [[Stefan Meyer-Kahlen]], [[Thomas Rolle]], [[Jörg Sameith]] ('''2003'''). ''Five visualizations of the k-best mode.'' [[ICGA Journal#26_3|ICGA Journal, Vol. 26, No. 3]] <ref>[https://althofer.de/k-best-visualisations.html K-Best Visualisations] by [[Ingo Althöfer]]</ref>
* [[Jens Lieberum]] ('''2003'''). ''An Evaluation Function for the Game of Amazons''. [[Advances in Computer Games 10]]
* [[Jens Lieberum]] ('''2005'''). ''[https://www.sciencedirect.com/science/article/pii/S0304397505005979 An evaluation function for the game of amazons]''. [https://en.wikipedia.org/wiki/Theoretical_Computer_Science_(journal) Theoretical Computer Science], Vol. 349, No. 2
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/person.php?id=244 Jens Lieberum's ICGA Tournaments]
* [https://genealogy.math.ndsu.nodak.edu/id.php?id=56059 The Mathematics Genealogy Project - Jens Lieberum]
* [http://ratings.fide.com/card.phtml?event=4634039 Lieberum, Jens, Dr. FIDE Chess Profile]
* [https://www.365chess.com/players/Jens_Lieberum Jens Lieberum chess games - 365Chess.com]
=References=
<references />
'''[[People|Up one level]]'''
[[Category:Chess Player|Lieberum]]
[[Category:Amazons Programmer|Lieberum]]
[[Category:Mathematician|Lieberum]]
