On the irreducible components of characteristic varieties
| dc.creator | Dimca, Alexandru | |
| dc.date | 2007-03-09 | |
| dc.date.accessioned | 2026-07-07T07:51:10Z | |
| dc.date.available | 2026-07-07T07:51:10Z | |
| dc.description | This is a quick survey on the characteristic varieties associated to rank one local systems on a smooth, irreducible, quasi-projective complex variety $M$. A key new result is Proposition 1.8, giving additional information on the constructible sheaf $\F=R^0f_*(\LL)$, where $\LL$ is a rank one local system on $M$ and $f:M \to S$ is a surjective morphism with $S$ a smooth curve and the generic fiber $F$ of $f$ connected. Corollary 1.9 says that for $S$ compact, the singular support of $\F$ cannot be a singleton. | |
| dc.description | This is a paper dedicated to the 60th anniversary of Dorin Popescu, as a sign of a life-long friendship | |
| dc.identifier | https://arxiv.org/abs/math/0703257 | |
| dc.identifier | http://arxiv.org/abs/math/0703257 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/125419 | |
| dc.subject | Algebraic Geometry | |
| dc.subject | Algebraic Topology | |
| dc.subject | 14F35, 32S60 | |
| dc.title | On the irreducible components of characteristic varieties | |
| dc.type | text |