The totally nonnegative part of G/P is a CW complex

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dc.creatorRietsch, Konstanze
dc.creatorWilliams, Lauren
dc.date2008-02-07
dc.date.accessioned2026-07-07T09:19:13Z
dc.date.available2026-07-07T09:19:13Z
dc.descriptionThe totally nonnegative part of a partial flag variety G/P has been shown by the first author to be a union of semi-algebraic cells. Moreover she showed that the closure of a cell is the union of smaller cells. In this note we provide glueing maps for each of the cells to prove that the totally nonnegative part of G/P is a CW complex. This generalizes a result of Postnikov, Speyer and the second author for Grassmannians.
dc.description14 pages
dc.identifierhttps://arxiv.org/abs/0802.0889
dc.identifierhttp://arxiv.org/abs/0802.0889
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154310
dc.subjectAlgebraic Geometry
dc.subject14m15; 20G15
dc.titleThe totally nonnegative part of G/P is a CW complex
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