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- W1789969055 abstract "Let $Q$ be a quiver, $M$ a representation of $Q$ with an ordered basis $cB$ and $ue$ a dimension vector for $Q$. In this note we extend the methods of cite{L12} to establish Schubert decompositions of quiver Grassmannians $Gr_ue(M)$ into affine spaces to the ramified case, i.e. the canonical morphism $F:Tto Q$ from the coefficient quiver $T$ of $M$ w.r.t. $cB$ is not necessarily unramified. In particular, we determine the Euler characteristic of $Gr_ue(M)$ as the number of emph{extremal successor closed subsets of $T_0$}, which extends the results of Cerulli Irelli (cite{Cerulli11}) and Haupt (cite{Haupt12}) (under certain additional assumptions on $cB$)." @default.
- W1789969055 created "2016-06-24" @default.
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- W1789969055 date "2015-09-07" @default.
- W1789969055 modified "2023-09-27" @default.
- W1789969055 title "Schubert decompositions for quiver Grassmannians of tree modules" @default.
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- W1789969055 doi "https://doi.org/10.2140/ant.2015.9.1337" @default.
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