On glueing curves on surfaces and zero cycles

Hursit Önsiper

Displaying similar documents to “On glueing curves on surfaces and zero cycles”

Grassmann defective surfaces

Claudio Fontanari (2004)

Bollettino dell'Unione Matematica Italiana

Similarity:

A projective variety $V$ is $(1, h)$ -defective if the Grassmannian of lines contained in the span of $h + 1$ independent points on $V$ has dimension less than the expected one. In the present paper, which is inspired by classical work of Alessandro Terracini, we prove a criterion of $(1, h)$ -defectivity for algebraic surfaces and we discuss its applications to Veronese embeddings and to rational normal scrolls.

Zariski surfaces

Piotr Blass

Similarity:

CONTENTSAcknowledgements...................................................................................................5Introduction..............................................................................................................6Notations..................................................................................................................8Chapter I. Zariski surfaces: definition and general properties................................10Chapter II. The theory...

Geometric linear normality for nodal curves on some projective surfaces

F. Flamini, C. Madonna (2001)

Bollettino dell'Unione Matematica Italiana

Similarity:

In questo lavoro si generalizzano alcuni risultati di [3] riguardanti la proprietà di alcune curve nodali, su superficie non-singolari in $P^{r}$ , di essere «geometricamente linearmente normali» (concetto che estende la ben nota proprietà di essere linearmente normale). Precisamente, per una data curva $C$ , irriducibile e dotata di soli punti nodali come uniche singolarità, che giace su una superfice $S$ proiettiva, non-singolare e linearmente normale, si determina un limite superiore «sharp»...