Secant Varieties Working Group

meetings take place on:
Wednesdays 11:30-13:00, room 403

in the winter semester:

1. 9.01.2019,
2. 16.01.2019,
3. 23.01.2019,
4. 30.01.2019,
5. 6.02.2019,
6. 13.02.2019,
7. 20.02.2019,
8. 27.02.2019,
9. 6.03.2019,
10. 13.03.2019,
11. 20.03.2019 (in the room 408)
12. 27.03.2019
13. 10.04.2019 (in the room 321)

Research problems we try to address:

1. Find equations of secant varieties that do not vanish on cactus varieties.
2. For a fixed tensor find criteria for  to have border rank equal to .
3. High rank loci. For let be the closure of tensors in which have rank equal to . Is there an equality between  and   for ,  where denotes the join of  and ?

We are open to discuss any issues related to secant varieties, cactus varieties, tensor rank, Waring rank, and their border/cactus analogues, identifiability, apolarity, Hilbert schemes of points etc.