Joonyeong Won


leonwon at kias dot re dot kr


Position

Research fellow, IBS, CGP             2016/04~ 
Research fellow, KAIST(ASARC)   2014/09~ 2016/03
Research fellow. KIAS                    2010/08~2014/08 



Education

Ph. D, POSTECH, 2010/08
B.S. ,   POSTECH, 2002/02 



Research interest

(singular) Fano varieties , Kaehler-Einstein metric, K-stability, log canonical threshold,   
alpha invariant, Okounkov body.



Published/Accepted paper

1. Log canonical thresholds on del Pezzo surfaces of degree >=2 (with Jihun Park),
Nagoya Math. J. 200 (2010), 1-26.

2. Log canonical thresholds on Gorenstein canonical del Pezzo surfaces (with Jihun Park),
Proc. Edinb. Math. Soc. 54 (2011), no. 1, 187-219.

3. Slope of a del Pezzo surface with du Val singularities ,
Bull. London Math. Soc. (2013) 45(2): 402-410.

4. Log canonical thresholds of certain Fano hypersurfaces(with Ivan Cheltsov and Jihun Park),
Math. Z. 276 (2014), no. 1-2, 51-79.

5. Slope stability of Fano fourfolds with respect to smooth surfaces (with Hosung Kim),
Adv. in Geom. (2014) 14, Issue 4, 719-734

6. Affine cones over smooth cubic surfaces(with Ivan Cheltsov and Jihun Park),
J. Eur. Math. Soc.(JEMS) 18 (2016), no. 7, 1537-1564.

7. Flexibility of affine cones over del pezzo surface of degree 4 (with Jihun Park),
European J. Math. (2016) 2, Issue 1, 304-318

8. Cylinders in singular del Pezzo surfaces (with Ivan Cheltsov and Jihun Park),
Compositio. Math.  152 (2016), 1198-1224.

9. Cylinders in del Pezzo surfaces (with Ivan Cheltsov and Jihun Park),
IMRN. (2017) 2017 (4): 1179-1230.

10. Hilbert functions of Cox rings of del Pezzo surfaces (with Jinhyung Park)
J. Algebra  480 (2017), 309-331.

11. Okounkov bodies associated to pseudoeffective divisors II  (with Sung Rak Choi, Jinhyung Park)
Taiwanese J. Math. Vol 21, No 3 (2017), 601-620 (special issue for the proceedings of the conference "Algebraic Geometry in East Asia 2016")

12. Alpha invariant for general polarizations of del Pezzo surfaces of degree 1 (with Kyusik Hong),
Math. Nachr.   Volume 290, Issue 11-12, (2017), 1689-1700.

13. Okounkov bodies and Zariski decompositions on surfaces (with Sung Rak Choi, Jinhyung Park)
Bull. Korean. Math. Soc.  (2017), 54, 1677-1697 (Special Volume for Magadan Conference)

14. Asymptotic base loci via Okounkov bodies(with Sung rak Choi, Yoonsuk Hyun, Jinhyung Park)
Adv.  Math.   323 (2018), 784-810

15. Alpha invariants of birationally rigid Fano threefolds  (with In-kyun Kim and Takuzo Okada)
IMRN.  (2018) 2018, Issue 9, 2745–2800

16. K-stability of smooth del Pezzo surfaces (with Jihun Park)
Math. Ann. published online  (
https://doi.org/10.1007/s00208-017-1602-7)

17. Okounkov bodies associated to pseudoeffective divisors (with Sung rak Choi, Yoonsuk Hyun, Jinhyung Park)
J. London Math. Soc. (2) 98 (2018), 170-195

18. Cylinders in Rational Surfaces (with Lisa Marquand)
European J. Math.  4 (2018), no. 3, 1161–1196

Preprint


19. Some irrational quartic threefolds (with Kyusik Hong)
Submitted 

20. Okounkov bodies associated to abundant divisors and Iitaka fibrations (with Sung Rak Choi, Jinhyung Park)
Submitted

21. Weakly exceptional singularities of log del pezzo surfaces (with In-kyun Kim)
Submitted

22. A product formula for volumes of divisors via Okounkov bodies (with Sung rak Choi,Seung-Jo Jung and Jinhyung Park )
Submitted

23. Local numerical equivalences and Okounkov bodies in higher dimensions (with Sung rak Choi and Jinhyung Park )
Submitted

24. Alpha invariants of birationally bi-rigid Fano threefolds  (with In-kyun Kim and Takuzo Okada)
Preprint
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