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  1. Home > Articles & Issues >
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  3. Dissimilarity Vector ...
Conference paper

Dissimilarity Vectors of Trees and Their Tropical Linear Spaces (Extended Abstract)

Benjamin Iriarte Giraldo (1)
(1) Department of Mathematics [MIT]
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Imported on
January 31, 2017
Published on
December 31, 2010
Last modified on
March 31, 2025
Volume
DMTCS Proceedings vol. AO, 23rd International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2011)
Proceedings
DOI
10.46298/dmtcs.2918
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https://about.hal.science/hal-authorisation-v1
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Dissimilarity Vectors of Trees and Their Tropical Linear Spaces (Extended Abstract)

Benjamin Iriarte Giraldo (1)
(1) Department of Mathematics [MIT]
Abstract
English
We study the combinatorics of weighted trees from the point of view of tropical algebraic geometry and tropical linear spaces. The set of dissimilarity vectors of weighted trees is contained in the tropical Grassmannian, so we describe here the tropical linear space of a dissimilarity vector and its associated family of matroids. This gives a family of complete flags of tropical linear spaces, where each flag is described by a weighted tree.
French
Nous étudions les propriétés combinatoires des arbres pondérés avec le formalisme de la géométrie tropicale et des espaces linéaires tropicaux. L'ensemble de vecteurs de dissimilarité des arbres pondérés est contenu dans la grassmannienne tropicale, donc nous décrivons ici l'espace linéaire tropical d'un vecteur de dissimilarité et sa famille de matroïdes associée. Cela permet d'obtenir une famille de drapeaux complets d'espaces linéaires tropicaux, où chaque drapeau est décrit par un arbre pondéré.
Keywords
  • [MATH.MATH-CO]Mathematics [math]/Combinatorics [math.CO]
  • [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM]
  • dissimilarity vector
  • tropical linear space
  • tight span
  • weighted tree
  • matroid polytope
  • T-theory
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