Abstract
Let X, Y, Z be integral subvarieties of P n . Let [X; Y] ⊆ P n denote the join. Under what conditions on X, Y and/or Z if [X; Y] = [X; Z], then Y = Z? Here, we study the case in which X, Y and Z are curves.
Acknowledgment
The author was partially supported by MIUR and GNSAGA of INdAM (Italy).
Notes
#Communicated by L. Ein.