A Kawamata-Viehweg type formulation of the (logarithmic) Akizuki- Nakano Vanishing Theorem

Date
2018/05/18 Fri 10:30 - 12:00
Room
3号館152号室
Speaker
Kenji Matsuki
Affiliation
Purdue University
Abstract

The celebrated Kodaira Vanishing Theorem asserts that
Hi(X,O(KX+A))=0
for i>0, where X is a nonsingular projective variety over C and A is an ample divisor on X.
According to the Iitaka philosophy, one obtains its logarithmic version by adding a boundary divisor
Hi(X,O(KX+D+A))=0
for i>0, where D=Di is an SNC divisor on X. Now the Kawamata-Viehweg Vanishing Theorem allows the boundary divisor to have a fractional part
Hi(X,O(KX+B+F+A))=Hi(X,O(KX+B+A)=0
for i>0, where D=BF is an SNC divisor on X, F=fjFj (0dimX,
where X is a nonsingular projective variety over C and A is an ample divisor on X. Again according to the Iitaka philosophy, one obtains its logarithmic version by replacing the usual differential forms with the lopgarithmic differentail forms
Hi(X,Ωj(log(D))(A))=0
for i+j>dimX, where D=Di is an SNC divisor on X. This is nothing but the Esnault-Viehweg Vanishing Theorem.
Then what is the alleged Kawamata-Viehweg type formulation of the (logarithmic) Akizuki-Nakano Vanishing Theorem?
The answer is the theme of this talk, and it was somewhat different from the author naively expected at the beginning.
This is a joint work with D. Arapura, D. Patel and J. Wlodarczyk.