**
Talks after 2011**

- Lengths of separable states, Jul 10, 2018, 2018 International Conference on Matrix Inequalities and Matrix Equations, Shanghai University, Shanghai, China June 8-10, 2018
- Separability of multi-qubit states in terms of diagonal and anti-diagonal entries, Jul 8, 2018, Seminar talk, Shanghai Normal University, Shanghai, China
- Positivity of multi-linear maps and applications to separability criteria in quantum information theory, Mar 8, 2018, 4th Seminar on Operator Theory and its Applications, Mar 7-8, 2018, Bojnord, Iran
- Separability criteria of multi-qubit states in terms of diagonal and anti-diagonal entries, Dec 16, 2017, 2017 Korea-China International Conference on Matrix Theory with Applications, December 14-17, 2017, Sungkyunkwan University, Suwon, Korea
- Separability of quantum states and positivity of multi-linear maps, I and II, Nov 9 and 10, 2017, The 1st Quantum Computation/Information/Cryptography School, November 09-12, 2017, Pyeongchang, Korea
- Separability of multi-qubit X-states, Oct 28, 2017, 2017 KMS Annual Meeting, October 27~29, 2017, Cheonan, Korea
- Characterizarion of block positivity and separability of X-shaped self-adjont multi-qubit matrices, Sep 29, 2017, 2nd Italy-Korea Joint Workshop on Quantum Probability, White Noise Analysis and Applications, September 29~30, 2017, KIAS, Seoul, Korea
- Positivity of multi-linear maps and applications to quantum information theory, Sep 15, 2017, Workshop on Operator algebras and Quantum Information Theory, 11-15 September 2017, Institut Henri Poincare, Paris, France
- Separability of three qubit X-states, Jul 27, 2017, 2017 Meeting of the International Linear Algebra Society, July 24-28 2017, Ames, U.S.A.
- Non-decomposable extremal positive bi-linear maps between two by two matrices, Jun 16, 2017, The 6th International Conference on Matrix Analysis and Applications, June 15-18, 2017, Duy Tan Univ. Danang, Vietnam
- Separability criterion for three-qubit states with a four dimensional norm, Jun 11, 2017, 2017 Workshop on Matrices and Operators, June 9 - 12, 2017, Hunan Univ. Changsha, China
- The role of phases in detecting three qubit entanglement, Dec 29, 2016, 2016 China-Korea International Conference on Matrix Theory with Applications, December 28-31 2016, Shanghai University, Shanghai, China
- Detecting entanglement, Nov 29, 2016, PQC Asia Forum in Seoul, Nov 28-29 2016, Seoul National University, Seoul, Korea
- Detecting various kinds of entanglement in multi-qubit systems, Sep 9, 2016, Workshop ¡°Quantum information theory and related topics 2016, September 8-10 2016, Kusatsu, Japan
- Separability of three qubit Greenberger-Horne-Zeilinger diagonal states, Jul 26, 2016, 17th Workshop: Non-Commutative Probability, Levy processes and operator algebras, with applications, July 24-30 2016, Bedlewo, Poland
- Positivity of multi-linear maps arising from entanglement witnesses in multi-partite systems, Jul 12, 2016, 20th Conference of the International Linear Algebra Society, July 11-15 Leuven, Belgium
- Separability of three qubit Greenberger-Horne-Zeilinger diagonal states, Jul 4, 2016, 2016 Workshop on Matrices and Operators, July 3-6 2016, Joongmoon, Korea
- Three qubit separability criteria with diagonal and anti-diagonal entries, Jun 9, 2016, 2016 International Workshop on Matrix Inequalities and Matrix Equations, June 8-10 2016, Shanghai University, China
- Construction of multi-qubit genuine entanglement witnesses, Mar 31, 2016, Seminar talk, Department of Mathematics, National University of Singapore
- Operator algebras for beginners, Dec 20, 21, 2015, Winter School on Operator Theory and Operator Algebras, Dec 20-23 2015, Manlipo, Korea
- Distinguishing various entanglement in multi-qubit systems, Nov 17, 2015, 2015 Korea-US Joint Workshop on Quantum Information, Nov 16-17 2015, Seoul, Korea
- Construction of multi-qubit optimal genuine entanglement witnesses, Sep 2, 2015, Quantum Information Theory and Realted Topics, Sep 1-3 2015, Hanoi, Vietnam
- Convex structures arising from quantum information theory, Aug 27, 2015, Quantum Markov Semigroups in Analysis, Physics and Probability, August 23-28 2015, Oaxaca, Mexico
- Construction of multi-partite genuine entanglement witnesses, July 30, 2015. 10th Jikji-Workshop on Infinite Dimensional Analysis and Quantum Probability, Jul 29 - Jul 31 2015, Cheongju, Korea
- Positivity of bi-linear maps with applications to quantuminformation theory, Jul 23, 2015, Positivity VIII, Jul 20 - 24 2015, Chengdu, China
- Construction of multi-partite genuine entanglement witnesses, Jul 20, 2015, 2015 Workshop on Matrices and Operators, July 19-21 2015, Xian, China
- Positivity of multi-linear maps to detect multi-partite entanglement, Jul 9, 2015, 26th International Workshop on Operator Theory and Applications, Jul 6-10 2015, Tbilisi, Georgia
- Positivity of bi-linear maps as tri-partiitte entanglement witnesses, Jun 29, 2015, International Workshop on Matrix Inequalities and Matrix Equations, June 28-30 2015, Shanghai University, China
- Various notions of positivity for bi-linear maps and applications to tri-partite entanglement, Jun 16, 2015, 43rd Canadian Operator Symposium on Operator Theory and Operator Algebras, Jun 15-19 2015, Waterloo, Canada
- Positive bi-linear maps as tri-partite entanglement witnesses, Apr 23, 2015, Math Colloquium, Ritsumeikan Univ., Kusatsu, Japan
- Various notions of positivity for bi-linear maps and applications to tri-partite entanglement, Apr 14, 2015, Operator Alegebra Seminar, RIMS, Kyoto University, Japan
- Simplices in the facial structures for sperable states, Mar 19, 2015, Math Colloquium, Department of Mathematics, UNIST, Ulsan, Korea
- Three-qubit entanglement witnesses with the full spanning properties, Mar 9, 2015, Seminar talk, Department of Mathematics, National University of Singapore
- Positivity of multi-linear maps and applications to quantum information theory, Jan 29, 2015, 4th Conference of Settat on Operator Algebras and Applications, Jan 27-30 2015, Marrakech, Morocco
- Simplex structures arising from quantum information theory, Dec 18, 2014, Conference on Operator Spaces and Quantum Probability, Dec 15-19 2014, Besancon, France
- Positive maps between matrix algebras as entanglement witnesses, Nov 12, 2014, Seminar talk, Department of Mathematics, National University of Singapore
- Permanents of matrices arising from quantum information theory, Aug 22, 2014, International Conference on Quantum Probability and Related Topics Aug 22-26 2014, Cheongju, Korea
- Permanents of matrices arising from quantum information theory, Jul 31 2014, The Twelveth Workshop on Numerical Ranges and Numerical Radii, Jul 28 - Aug 1 2014, Sanya, China
- Separable states with unique decompositions and applications to construction of PPT entanglement, Jul 9, 2014, 16th WORKSHOP: NON-COMMUTATIVE HARMONIC ANALYSIS, Jul 6-12 2014, Bedlewo, Poland
- Separable states with unique decomposition and applications to construction of PPT enatnglement, Mar 27, 2014, 6th Korea Operator Alegrba Seminar, Mar 27-29 2014, Ulsan, Korea
- Geometry for separable states, Oct 25, 2013, Annual Meeting of the Korean Mathematical Society, Oct 24-26 2013, Seoul, Korea
- Facial structures for bipartite separable states and applications to the separability criterion, Jun 4, 2013, ILAS 2013 Meeting, June 3-8 Providence, U.S.A.
- Facial structures for separable states, May 25, 2013, Symposium KCIK 2013, May 23-25 2013, Sopot, Poland
- Mathematics from the Theory of Entanglement, May 16, 2013, Math Colloquium, Seoul National University, Seoul, Korea
- Simplex structures for separable states, Jan 29, 2013, Banach Spaces and Related Topics, Jan 28-Feb 1 2013, Gyeongju, Korea
- Simplicial faces and lengths for separable states, Dec 29, 2012, 4th Workshop on quantum information science, Dec 28-29 2012, Hong Kong Polytechnic University
- Geometry for separable and PPT states, Dec 14, 2012, Workshop on quantum information theory and its Applications, Dec 13-15 2012, Ritsumeikan Univ., Kusatsu, Japan
- Recent development in the theory of entanglement witnesses, Dec 13, 2012, Workshop on quantum information theory and its Applications, Dec 13-15 2012, Ritsumeikan Univ., Kusatsu, Japan
- On the structural physical approximation conjecture, Sep 26, 2012, 15th Workshop: Non-commutative Harmonic Analysis, Sep 23-29 2012, Bedlewo, Poland
- Facial structures for separable states and PPT states, Jul 24 2012, Infinite dimensional analysis and Quantum probability, Jul 23-27 2012, Chungbuk National Univ, Cheongju, Korea
- Positive linear maps and entanglement witnesses, Jun 25 2012, Positive matrices and operators: Recent decelopments and advances, Jun 24-28 2012, Kyungpook National Univ, Daegu, Korea
- On the optimality of entanglement witnesses, Jun 8 2012, Operator Spaces, Quantum Probability and Applications, Jun 4-10 2012, Wuhan University, Wuhan, China
- On positive partial transpose, May 14 2012, Seminar, KIAS, Seoul, Korea
- Classification of bi-qutrit PPT entangled edge states by their ranks, Jan 12 2012, Geometry of Quantum Entanglement, Jan 9-13 2012, CIRM, Luminy, France
- A Diophantine equation arising from quantum physics, Dec 26 2011, Math Seminar, Postech, Pohang, Korea
- Product vectors and entangled edge states with positive partial transposes, Oct 27 2011, Math Seminar, Chungbuk National Univ, Cheongju, Korea
- Product vectors and entangled edge states with positive partial transposes, Oct 13 2011, Math Colloquium, Ritsumeikan Univ. Kusatsu, Japan
- Facial structures for various notions of positivity and applications to the theory of entanglement, Oct 12-13 2011, Intensive Lectures, Ritsumeikan Univ. Kusatsu, Japan Lecture Note
- Positive linear maps and entanglement witnesses, Oct 6 2011, Math Colloquium, Inha University, Incheon, Korea
- Product vectors and their partial conjugates, Sep 28 2011, 14th Workshop: Non-commutative Harmonic Analysis, Sep 25-Oct 1 2011, Bedlewo, Poland

**== 2018 ==**

**== 2017 ==**

**== 2016 ==**

**== 2015 ==**

**== 2014 ==**

**== 2013 ==**

**== 2012 ==**

**== 2011 ==**