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[[Image:Geiss christof.jpg|thumb|Christof Geiß 2013]]
'''Christof Geiß''', also called '''Geiss Hahn''' or '''Geiß Hahn''', is a German mathematician.
Geiß studied mathematics at the [[University of Bayreuth]], where he received in 1990 his [[Diplom]] with Diplomarbeit ''Darstellungsendliche Algebren und multiplakative Basen'' and in 1993 his doctorate. His doctoral thesis ''Tame distribute algebras and related topics'' was written under the supervision of Wolfgang Erich Müller.<ref></ref> Geiß does research and teaches at the [[Universidad Nacional Autónoma de México]] (UNAM), where he studied already in 1991/92 and became in 1993 an [[Academic rank#Mexico|Investigador Associado]]. He is there an [[Academic rank#Mexico|Investigador Titular C]].<ref></ref>
His research deals with [[cluster algebra]]s in Lie theory and their categorization, pre-projective algebras, and [[Quiver (mathematics)|quiver]]s in combination with symmetric [[Cartan matrix|Cartan matrices]].
In 2018 Geiß was an Invited Speaker with talk ''Quivers with relations for symmetrizable Cartan matrices and algebraic Lie Theory'' at the [[International Congress of Mathematics]].<ref>[https://ift.tt/2Mb9Mik Arxiv]</ref>
==Selected publications==
*with Bernard Leclerc, Jan Schröer: Rigid modules over preprojective algebras, Inventiones mathematicae, vol. 165, 2006, pp. 589–632, [https://ift.tt/32cRi6i Arxiv]
*with B. Leclerc, J. Schröer: Kac–Moody groups and cluster algebras, Advances in Mathematics, vol. 228, 2011, pp. 329–433, [https://ift.tt/2MNZnbt Arxiv]
*with B. Leclerc, J. Schröer: Semicanonical bases and preprojective algebras, Annales Scientifiques de l’Ecole Normale Supérieure, vol. 38, 2005, pp. 193–253, [https://ift.tt/2MCbvMw Arxiv], [https://ift.tt/2M7KSQm Teil 2, Arxiv]
*with B. Leclerc, J. Schröer: Cluster algebra structures and semicanonical bases for unipotent groups, [https://ift.tt/33pStja Arxiv 2007]
*with Leclerc, Schröer: Cluster algebras in algebraic Lie theory, Transformation Groups, vol. 18, 2013, pp. 149–178, [https://ift.tt/2OHdqC0 Arxiv]
==References==
<references/>
[[Category:Living people]]
[[Category:20th-century German mathematicians]]
[[Category:21st-century German mathematicians]]
[[Category:University of Bayreuth alumni]]
[[Category:National Autonomous University of Mexico faculty]]
'''Christof Geiß''', also called '''Geiss Hahn''' or '''Geiß Hahn''', is a German mathematician.
Geiß studied mathematics at the [[University of Bayreuth]], where he received in 1990 his [[Diplom]] with Diplomarbeit ''Darstellungsendliche Algebren und multiplakative Basen'' and in 1993 his doctorate. His doctoral thesis ''Tame distribute algebras and related topics'' was written under the supervision of Wolfgang Erich Müller.<ref></ref> Geiß does research and teaches at the [[Universidad Nacional Autónoma de México]] (UNAM), where he studied already in 1991/92 and became in 1993 an [[Academic rank#Mexico|Investigador Associado]]. He is there an [[Academic rank#Mexico|Investigador Titular C]].<ref></ref>
His research deals with [[cluster algebra]]s in Lie theory and their categorization, pre-projective algebras, and [[Quiver (mathematics)|quiver]]s in combination with symmetric [[Cartan matrix|Cartan matrices]].
In 2018 Geiß was an Invited Speaker with talk ''Quivers with relations for symmetrizable Cartan matrices and algebraic Lie Theory'' at the [[International Congress of Mathematics]].<ref>[https://ift.tt/2Mb9Mik Arxiv]</ref>
==Selected publications==
*with Bernard Leclerc, Jan Schröer: Rigid modules over preprojective algebras, Inventiones mathematicae, vol. 165, 2006, pp. 589–632, [https://ift.tt/32cRi6i Arxiv]
*with B. Leclerc, J. Schröer: Kac–Moody groups and cluster algebras, Advances in Mathematics, vol. 228, 2011, pp. 329–433, [https://ift.tt/2MNZnbt Arxiv]
*with B. Leclerc, J. Schröer: Semicanonical bases and preprojective algebras, Annales Scientifiques de l’Ecole Normale Supérieure, vol. 38, 2005, pp. 193–253, [https://ift.tt/2MCbvMw Arxiv], [https://ift.tt/2M7KSQm Teil 2, Arxiv]
*with B. Leclerc, J. Schröer: Cluster algebra structures and semicanonical bases for unipotent groups, [https://ift.tt/33pStja Arxiv 2007]
*with Leclerc, Schröer: Cluster algebras in algebraic Lie theory, Transformation Groups, vol. 18, 2013, pp. 149–178, [https://ift.tt/2OHdqC0 Arxiv]
==References==
<references/>
[[Category:Living people]]
[[Category:20th-century German mathematicians]]
[[Category:21st-century German mathematicians]]
[[Category:University of Bayreuth alumni]]
[[Category:National Autonomous University of Mexico faculty]]
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