Sangjin Lee

FLYPES OF CLOSED 3-BRAIDS IN THE STANDARD CONTACT SPACE

K. Ko, Sangjin Lee, 1999 .

Genera of some closed 4-braids

K. Ko, Sangjin Lee, 1997 .

Band-generator presentation for the 4-braid group

Ki Hyoung Ko, Eun Sook Kang, Sang-Jin Lee, 1997 .

New Public-Key Cryptosystem Using Braid Groups

Jung Hee Cheon, Sangjin Lee, Ju-Sung Kang, 2000, CRYPTO.

A new approach to the word and conjugacy problems in the braid groups

J. Birman, K. Ko, Sangjin Lee, 1997, math/9712211.

An Efficient Implementation of Braid Groups

Jung Hee Cheon, Sangjin Lee, Ki Hyoung Ko, 2001, ASIACRYPT.