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https://dx.doi.org/10.13154/29...
Doctoral thesis . 2023
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Combinatorics of subword complexes for finite type Coxeter systems

Authors: Jahn, Dennis (Dr. rer. nat.);

Combinatorics of subword complexes for finite type Coxeter systems

Abstract

Unterwortkomplexe (Uwk) für Coxeter-Systeme endlichen Typs sind abstrakte Simplizialkomplexe, induziert durch reduzierte Wörter eines Elements in der assoziierten Gruppe, die in einem Wort Q, geschrieben in den einfachen Erzeugern des Systems, vorkommen. Diese Dissertation umfasst 5 Kapitel. Die ersten 3 behandeln die Resultate zweier veröffentlichter Arbeiten und die letzten 2 behandeln neue Inhalte. In Kapitel 3 wird die Theorie vom Bruhat-Kegeln erweitert um diese in Kapitel 4 mit Uwk zu verbinden und die Theorie von Brick-Polytopen auf Brick-Polyeder zu erweitern. In Kapitel 5 wird die Verbindung von Uwk und Cluster-Algebren erweitert und die unzerlegbaren Minkowski-Summanden des Assoziaeders bestimmt. In Kapitel 6 wird mittels einer Verallgemeinerung von Uwk gezeigt, wie man bestimmte nicht sphärische Uwk zu einem sphärischen Komplex zusammenkleben kann. In Kapitel 7 werden Coxeter-Permutaeder mittels Uwk erhalten. Es werden Gitterpunkte des Brick-Polytops mit SSYT verbunden.

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Germany
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Keywords

ddc:510, Algebra, Algebraische Kombinatorik, 510 Mathematik, Coxeter Gruppe, Simplizialer Komplex, Cluster-Algebra

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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