## 권도용, DoYong Kwon ( D.Y. Kwon )

Department of Mathematics, Chonnam National University
Gwangju 500-757, Republic of Korea

TEL : +82-(0)62-530-3336
email :

devil's staircase

#### 학력 및 경력 / Brief CV

• Mar. 1993 - Feb. 1998   B.S. in Mechanical Design & Production Engineering, Seoul National University
• Mar. 1998 - Feb. 2000   M.S. in Mathematics, Seoul National University
• Mar. 2000 - Feb. 2003   Ph.D. in Mathematics, Seoul National University
• May 2003 - Aug. 2006   Research Fellow, School of Computational Sciences, Korea Institute for Advanced Study
• Sep. 2006 - Feb. 2008   Postdoctoral Fellow, Department of Mathematics, Yonsei University
• Mar. 2008 - Aug. 2009   Research Assistant Professor, Department of Mathematics, Pohang University of Science and Technology
• Sep. 2009 - Aug. 2013   Assistant Professor, Department of Mathematics, Chonnam National University
• Sep. 2013 -                    Associate Professor, Department of Mathematics, Chonnam National University

#### 연구분야 / Research Interest

• Symbolic Dynamics & Ergodic Theory
• Combinatorics on Words
• Number Theory

#### 논문목록 / Publications

• D.Y. Kwon and F.C. Park, Evolution of inelastic plane curves, Applied Mathematics Letters 12 (1999), no.6, 115-119.
• Dong Pyo Chi and DoYong Kwon, Sturmian words, $\beta$-shifts, and transcendence, Theoretical Computer Science 321 (2004), no.2-3, 395-404. preprint .
• D.Y. Kwon, F.C. Park and D.P. Chi, Inextensible flows of curves and developable surfaces, Applied Mathematics Letters 18 (2005), no.10, 1156-1162.
• Ee-Chien Chang, Sung Woo Choi, DoYong Kwon, Hyungju Park, and Chee K. Yap, Shortest path amidst disc obstacles is computable, International Journal of Computational Geometry and Applications 16 (2006), no.5&6, 567-590. preprint , (extended abstract in the 21st Annual ACM Symposium on Computational Geometry (2005) 116-125).
• DoYong Kwon, Beta-numbers whose conjugates lie near the unit circle, Acta Arithmetica 127 (2007), no.1, 33-47. preprint .
• DoYong Kwon, Minimal polynomials of some beta-numbers and Chebyshev polynomials, Acta Arithmetica 130 (2007), no.4, 321-332. preprint .   ( Table of reducible beta-polynomials of lower and upper self-Christoffel numbers: the reference [17] in the paper).
• DoYong Kwon, A devil's staircase from rotations and irrationality measures for Liouville numbers, Mathematical Proceedings of the Cambridge Philosophical Society 145 (2008), no.3, 739-756. preprint   ( older version ).
• Shigeki Akiyama and DoYong Kwon, Constructions of Pisot and Salem numbers with flat palindromes, Monatshefte für Mathematik 155 (2008), no.3-4, 265-275. preprint .
• DoYong Kwon, The natural extensions of $\beta$-transformations which generalize baker's transformations, Nonlinearity 22 (2009), no.2, 301-310. preprint .
• DoYong Kwon, Reciprocal polynomials with all zeros on the unit circle, Acta Mathematica Hungarica 131 (2011), no.3, 285-294. preprint .
• DoYong Kwon, Reciprocal polynomials with all but two zeros on the unit circle, Acta Mathematica Hungarica 134 (2012), no.4, 472-480. preprint .
• DoYong Kwon, The orbit of a $\beta$-transformation cannot lie in a small interval, Journal of the Korean Mathematical Society 49 (2012), no.4, 867-879. preprint . Addendum .
• DoYong Kwon, Moments of discrete measures with dense jumps induced by $\beta$-expansions, Journal of Mathematical Analysis and Applications 399 (2013), no.1, 1-11. preprint .
• DoYong Kwon, A two-dimensional singular function via Sturmian words in base $\beta$, Journal of Number Theory 133 (2013), no.11, 3982-3994. preprint .
• DoYong Kwon, A one-parameter family of Dirichlet series whose coefficients are Sturmian words, Journal of Number Theory 147 (2015), 824-835. preprint .
• DoYong Kwon, Exceptional parameters of linear mod one transformations and fractional parts $\{\xi (p/q)^n\}$, Comptes Rendus Mathematique 353 (2015), no.4, 291-296. preprint .
• DoYong Kwon, Discrete measures with dense jumps induced by Sturmian Dirichlet series, Bulletin of the Korean Mathematical Society 52 (2015), no.6, 1797-1803. preprint .
• DoYong Kwon, Irreducible polynomials with all but one zero close to the unit disk, Colloquium Mathematicum 143 (2016), no.2, 265-270. preprint .
• Minsang Bang and DoYong Kwon, On the irreducibility of sum of two reciprocal polynomials, Bulletin of the Korean Mathematical Society 53 (2016), no.3, 833-842. preprint .

Last Update: January 11, 2017