• Medientyp: E-Artikel
  • Titel: Monodromy Filtrations and the Topology of Tropical Varieties
  • Beteiligte: Helm, David; Katz, Eric
  • Erschienen: Canadian Mathematical Society, 2012
  • Erschienen in: Canadian Journal of Mathematics
  • Sprache: Englisch
  • DOI: 10.4153/cjm-2011-067-9
  • ISSN: 0008-414X; 1496-4279
  • Schlagwörter: General Mathematics
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title><jats:p>We study the topology of tropical varieties that arise from a certain natural class of varieties. We use the theory of tropical degenerations to construct a natural, “multiplicity-free” parameterization of Trop(<jats:italic>X</jats:italic>) by a topological space Г<jats:italic><jats:sub>X</jats:sub></jats:italic>and give a geometric interpretation of the cohomology of Г<jats:italic><jats:sub>X</jats:sub></jats:italic>in terms of the action of a monodromy operator on the cohomology of<jats:italic>X</jats:italic>. This gives bounds on the Betti numbers of Г<jats:italic><jats:sub>X</jats:sub></jats:italic>in terms of the Betti numbers of<jats:italic>X</jats:italic>which constrain the topology of Trop(<jats:italic>X</jats:italic>). We also obtain a description of the top power of the monodromy operator acting on middle cohomology of<jats:italic>X</jats:italic>in terms of the volume pairing on Г<jats:italic><jats:sub>X</jats:sub></jats:italic>.</jats:p>
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