If you are interested in one of my research papers, feel free to email me to request a preprint.

The following are in print.

**Continued Fractions for Linear Fractional Transformations of Power Series:**published in the Finite Fields and Their Applications 11 (2005), 45-55.**New Distance-Preserving Maps of Odd Length:**published in the IEEE Transactions on Information Theory 50 (2004), 2539-2543.**The Automorphism Group of a Linear Space with The Rosenbloom-Tsfasman Metric:**published in the European Journal of Combinatorics 24 (2003), 607–612.**A Counting Formula about The Symplectic Similitude Group:**published in the Bulletin of the Australian Mathematical Society 63 (2001), 15-20.

The following are accepted and will appear in print.

**Cyclic Constructions of Distance-Preserving Maps:**to appear in the IEEE Transactions on Information Theory.

The following are in submission.

**Distance-Increasing Maps of All Length by Simple Mapping Algorithms:**submitted to the IEEE Transactions on Information Theory.

Others.

**Generic formulas for exponential sums over symplectic groups:**This is my master's degree thesis in 1999. [PDF]**Group of polynomial permutations of $\mathbb{Z}_p^r$:**A joint work with Heisook Lee and Hyunjoo Choi of Ewha University. [PDF]

To conceive is a pleasure; But to give birth is a pain.— C.F. Gauss |