2025
A remark on some punctual Quot schemes on smooth projective curves, Minami-Chita workshop on algebraic, arithmetic, and complex geometry, May. 23.
A remark on some punctual Quot schemes on smooth projective curves, Tsinghua Algebraic Geometry Seminar, Online, Mar.14.
On estimation of Seshadri constants, Conference - Affine Geometry and Birational Geometry, SKYBAY Hotel Gyeongpo, Feb. 10,11.
A remark on some punctual Quot schemes on smooth projective curves, Workshop in Algebraic Geometry in Bandai-Atami, Koriyama Yurakkusu Atami, Jan.19.
2024
On Seshadri constant and Gromov width on toric varieties and lattice width of moment polytopes, Geometry of projective varieties and related topics 2024, Kochi University, Oct. 14.
Review of some recent results on linear systems on abelian varieties, Japanese-European Symposium on Symplectic Varieties and Moduli Spaces – 8th Edition, RIMS, Sep. 17.
On Seshadri constant and Gromov width on toric varieties and lattice width of moment polytopes, Varieties with Boundaries, Wakkanai City Japan Russia Friendship Center, Jun. 28.
2023
Projective normality of general polarized abelian varieties, K3, Enriques Surfaces, and Related Topics, Nagoya University, Mar. 22.
Review of some recent results on linear systems on abelian varieties, The 1st Algebraic geometry Atami symposium, The building of the Izu Mainichi Shimbun, Feb.8.
2022
Projective normality of general polarized abelian varieties, Algebraic Geometry Seminar, University of Tokyo, Oct. 25.
Projective normality of general polarized abelian varieties, Kinosaki Algebraic Geometry symposium, online, Oct. 20.
Projective normality of general polarized abelian varieties, Algebraic Geometry Seminar, IBS Center for Complex Geometry, online, Mar.8.
2021
Linear systems on abelian varieties via M-regularity of Q-twisted sheaves, The 66th Symposium on Algebra, Waseda University, online, Aug.31.
Linear systems on general polarized abelian varieties of type (1,...,1,d), Miyako-no-Seihoku Algebraic Geometry Symposium, Waseda University, online, Aug.19.
Linear systems on abelian varieties via M-regularity of Q-twisted sheaves, ZAG, online, Feb. 25.
Linear systems on abelian varieties, The 16th Kagoshima Algebra-Analysis-Geometry Seminar, online, Feb. 17.
2020
Some positivity properties of ample line bundles on abelian 3-folds via higher syzygies, TK Algebraic Geometry seminar, online, Jul. 22.
2019
Some topics in projective geometry of algebraic varieties, iTHEMS Math seminar, RIKEN, Nov. 8.
On a generalization of Seshadri constant, Algebraic Geometry seminar, Tohoku University, Jul. 12.
On a generalization of Seshadri constant, Higher dimensional algebraic varieties in Osaka II, Osaka University, May. 27.
On a generalization of Seshadri constant, Toric geometry, degenerations and related topics, Kobe University, Feb. 13.
2018
On Loewy filtrations and K-stability of Fano varieties with non-reductive automorphism groups, Workshop on Birational Geometry and Related Topics, Shanghai Center for Mathematical Sciences, China, Nov. 3.
On Loewy filtrations and K-stability of Fano varieties with non-reductive automorphism groups, Algebraic Geometry in East Asia, Institute of Mathematics – Vietnam Academy of Science and Technology, Vietnam, Oct. 25.
On Loewy filtrations and K-stability of Fano varieties with non-reductive automorphism groups, Differential, Algebraic and Topological Methods in Complex Algebraic Geometry, Grand Hotel San Michele, Italy, Sep. 6.
A combinatorial description of dual defects of toric varieties, Positivity in Algebraic Geometry, Yonsei University, Jun. 6.
A remark on higher syzygies on abelian surfaces, Higher dimensional algebraic geometry, University of Tokyo, Mar. 13.
On Grothendieck ring of varieties and derived equivalence, The 11th Conference on Arithmetic and Algebraic Geometry, University of Tokyo, Jan. 23.
Some topics on positivity of line bundles, KAIST, Korea, Jan. 2,3.
2017
On Grothendieck ring of varieties and derived equivalence, Second Japanese-European Symposium on Symplectic Varieties and Moduli Spaces, The Bellavista Relax Hotel, Italy, Sep. 21.
On reconstruction problem in algebraic vision, Classification and Moduli Theory of Algebraic Varieties, Hotel Continental Ischia, Italy, Sep. 14.
On derived equivalence and Grothendieck ring of varieties, The 2nd Higher dimensional algebraic geometry Echigo Yuzawa symposium, Yuzawa-cho Kouminkan, Feb. 16.
Remark on higher syzygies on abelian surfaces, Newton-Okounkov Bodies, Test Configurations, and Diophantine Geometry, BIRS, Canada, Feb. 9.
2016
On dual defects of toric varieties, Higher dimensional algebraic variety and around, Kobo-Kyoto, 2016 Kobe University, Feb. 2.
2015
Kobayashi hyperbolic imbeddings into quadric and cubic surfaces, Singularities and invariants of higher dimensional algebraic varieties, RIMS, Dec. 14.
Kobayashi hyperbolic imbeddings into quadric and cubic surfaces, Higher Dimensional Algebraic Geometry, National Taiwan University, Taiwan, Aug. 20.
Gauss maps of toric varieties, SIAM Conference on Applied Algebraic Geometry, Minisymposium, NIMS, Korea, Aug. 6.
On Gauss maps in positive characteristic, The 13th Affine Algebraic Geometry Meeting, Kwansei Gakuin University, Mar. 5.
2014
On Gauss maps in positive characteristics , Kinosaki Algebraic Geometry symposium, Kinosaki International Arts Center, Oct. 23.
Small Q-factorial modifications of Quot schemes of trivial bundles on P^1 , Younger generations in Algebraic and Complex geometry III, Ikiiki Hiroba, Nagasaki, Jan. 7.
2013
Small Q-factorial modifications of Quot schemes of trivial bundles on P^1, 5th Algebraic Geometry in East Asia, Institute of Mathematics, AMSS, China, Oct. 15.
Examples of Mori dream spaces with Picard number two, 4th Workshop on Higher Dimensional Algebraic Geometry, National Taiwan University, Taiwan, Mar. 25.
Examples of Mori dream spaces with Picard number two, Workshop on birational geometry, University of Tokyo, Jan. 18.
2012
Seshadri constants and degrees of defining polynomials, Kinosaki Algebraic Geometry symposium, Kinosaki dai-kaigikan, Oct. 25.
Seshadri constants and degrees of defining polynomials, Korea-Japan Joint Conference in Algebraic Geometry, Gunsan, Korea, Aug. 23.
Seshadri constants and degrees of defining polynomials, Workshop Linear Series on algebraic surfaces, University of Maniz, Germany, Jul. 10.
2011
Seshadri constants via toric degenerations, Algebraic geometry conference, Chulalongkorn University, Thailand, Dec. 23.
Okounkov bodies and Seshadri constants, Summer school on Algebraic Geometry, RIMS, Jun. 16.
How to estimate Seshadri constants, Workshop on Algebraic Geometry -Fano, positive characteristics and related topics-, Kyushu University. Feb. 21.