Geometry and Topology Lab

Ki-Heon Yun (윤기헌/尹基憲)

Welcome to Geometry and Topology Lab located at Sungshin Women’s University, Seoul, South Korea. Our lab is focused on a classification problem of smooth and symplectic 4-manifolds.

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Personal Information

Mailing Address:

Department of Mathematics
Sungshin Women’s University
2 Bomun-ro 34 Da-gil, Seongbuk-gu
Seoul 02844, Republic of Korea

Phone: +82-2-920-7534(Office)

FAX: +82-2-920-2046



Work Experiences

Long term visit

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Mathematical Services

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Research Interests

Research Grant

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Publications and Abstracts

On the signature of a Lefschetz fibration coming from an involution

Multi-variable Alexander polynomial of a plat

Rational blow-downs and nonsymplectic 4-manifolds with one basic class

Twisted fiber sums of Fintushel-Stern’s knot surgery 4-manifolds

Nonisomorphic Lefschetz fibrations on a knot-surgered 4-manifold

Exotic smooth structures on

Lefschetz fibration structures on knot surgery 4-manifolds

Families of non-diffeomorphic 4-manifolds with the same Seiberg-Witten invariants

Monodromy groups on knot surgery 4-manifolds

Lefschetz fibrations on knot surgery 4-manifolds via Stallings twist

Minimal number of singular fibers in Lefschetz fibrations over the torus

Simply connected complex surfaces of general type with and

On dissolving knot surgery 4-manifolds under a -connected sum

[Personal Infomation][Services][Research][Publications]