Unimodales Polynom
Ein unimodales Polynom ist in der Mathematik ein Polynom, dessen Koeffizienten (bei Vernachlässigung des Vorzeichens) eine unimodale Folge bilden. Zum Beispiel ist (das chromatische Polynom des Petersen-Graphen) unimodal.
Beispiele
Zahlreiche in der Mathematik vorkommende Polynome sind unimodal.
- Das chromatische Polynom eines Graphen ist unimodal.[1]
- Allgemeiner ist das charakteristische Polynom eines Matroids unimodal.[2]
- Die Strukturkonstanten der Kazhdan-Lusztig-Basis für die Iwahori-Hecke-Algebra eines Coxeter-Systems sind ein unimodales Polynom.[3]
Weblinks
- Unimodal Polynomial (MathWorld)
Einzelnachweise
- ↑ June Huh: Milnor numbers of projective hypersurfaces and the chromatic polynomial of graphs. J. Am. Math. Soc. 25, No. 3, 907-927 (2012).
- ↑ Karim Adiprasito, June Huh, Eric Katz: Hodge theory for combinatorial geometries. Ann. Math. (2) 188, No. 2, 381-452 (2018).
- ↑ Ben Elias, Geordie Williamson: Relative hard Lefschetz for Soergel bimodules. J. Eur. Math. Soc. (JEMS) 23, No. 8, 2549-2581 (2021).
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