== 2024 ==

• Choi matrices; infinite dimensional cases and examples, Apr 5, 2024, 2024 HCMC Focus Program on Function Theory, Operator Theory and Applications, KIAS, Seoul, Korea
• Infinite dimensional analogues of Choi matrices, Jan 22, 2024, Banach Spaces and Related Topics, Jan 22 - 26, Pohang, Korea

== 2023 ==

• Roles of Choi matrices in current quantum information theory, Dec 12, 2023, Seminar talk, Department of Mathematics, Chungbuk National University, Cheongju, Korea
• Choi matrices revisited, Nov 7, 2023, Recent Progress in Operator Theory and its Applications, November 6 - 8, Kyoto, Japan
• An unified approach to various criteria through ampliation arising from quantum information theory, Jun 19, 2023, Mathematical Structures in Quantum Mechanics, June 19-22, 2023, Gdansk, Poland
• Exposedness of elementary positive maps between matrix algebras, Jun 7, 2023, 16th Workshop on Numerical Ranges and Numerical Radii, June 7 - 9, 2023, Coimbra, Portugal
• ÀÛ¿ë¼Ò´ë¼ö¿Í ¾çÀÚÁ¤º¸ÀÌ·Ð, 6¿ù 1ÀÏ, ¼öÇа­¿¬È¸, ¼­¿ï´ëÇб³ ¼ö¸®°úÇкÎ
• Positive maps between matrices arising from quantum information theory, May 25, 2023, Colloquium talk, Department of Mathematics, Ulsan University, Ulsan, Korea
• Exposed positive linear maps between matrix algebras, May 4, 2023, Workshop on Operator Theory and Operator Algebras, May 3-5, 2023, Sokcho, Korea
• Connecting compositions and tensor products of linear maps between matrix algebras, Jan 10, 2023, 43rd International Conference Quantum Probability, and Infinite Dimensional Analysis, January 8-14, 2023, Yeosu, Korea

== 2022 ==

• Positive maps in the theory of quantum information theory: V Various kinds of positive maps, VI Mapping cones and tensor products, Aug 22, 2022 Workshop on Quantum Analysis 2022, August 21 - 26, 2022, Gangneung, Korea
• Mapping cones arising from quantum information theory, Aug 2, 2022, 19th WORKSHOP: Noncommutative probability, noncommutative harmonic analysis and related topics, with applications- postponed from 25-31.07.2021, Bedlewo, Poland
• Mapping cones between matrix algebras in quantum information theory, Jun 4, 2022, Workshop on Matrix Analysis and Its Applications, June 4, Quy Nhon, Vietnam
• Lattices and polytopes arising from quantum information theory, Apr 28, 2022, Spring Meeting of Korean Math. Soc.

== 2021 ==

• Convex cones in mapping spaces between matrix algebras, Nov 4, 2021, The 15th HU-SNU Joint Symposium on Mathematics: Operator Algebras
• Lattice arising from quantum information theory, Oct 21, 2021, Annual Meeting of Korean Math. Soc.

== 2020 ==

• Convex cones in mapping spaces between matrix algebras, Oct 24, 2020, Annual Meeting of Korean Math. Soc.
• Positive maps in quantum information theory: III Left/Right mapping cones, IV Examples, Aug 18, 2020, Workshop on Quantum Analysis, August 17 - 22, 2020, Pyeongchang, Korea
• Positive maps in quantum information theory: I Positive maps and duality, II Entanglement and PPT squared conecture, Aug 17, 2020, Workshop on Quantum Analysis, August 17 - 22, 2020, Pyeongchang, Korea
• A lattice arising from quantum information theory, Jan 10, 2020, Seminar talk, Department of Mathematics, National Univ. Singapore.

== 2019 ==

• Positivity of multi-linear maps and applications to quantum information theory, Oct 8, 2019, Analysis Seminar talk, KIAS, Seoul, Korea
• Various separability/entanglement for X-shaped multi-qubit states, Jul 26, 2019, 2019 International Workshop on Matrices and Operators, Jul 23-27, 2019, Chern Institute of Mathematics, Nankai Univ. Tianjin, China
• Roles of exposed indecomposable positive multi-linear maps in quantum information theory, Jun 23, 2019, The Fifteenth Workshop on Numerical Ranges and Numerical Radii, June 21-24, Toyo Univ. Kawagoe, Japan
• Roles of exposed indecomposable positive multi-linear maps in quantum information theory, Jun 17, 2019, Operator Algebras and Applications, Jun 17-21, Simons Center for Geometry and Physics, Stony Brook NY, USA
• On the convex cones arising from classification of partial entanglement of three qubit system, Jun 8, 2019, The 5th International Conference on Matrix Inequalities and Matrix Equations, June 7-10, Guilin, China
• Entangled edge states of corank one with positive partial transposes, Jun 2, 2019, Interactions between Noncommutative Analysis and Quantum Information Theory, May 31-Jun 5, 2019, Harbin, China
• Entangled edge states of corank one with positive partial transposes, May 25, 2019, International Conference on Matrix Theory and Applications, May 23-27, 2019, Jeju National University, Jeju, Korea
• Indecomposable exposed positive multi-linear maps and separable states with unique decomposition, May 8, 2019, Seminar talk, Department of Mathematics, University of Oslo, Norway

== 2018 ==

• Separability of multi-qubit states in terms of diagonal and anti-diagonal entries, Oct 15, 2018, The 39th International Conference on Quantum Probability and Infinite Dimensional Analysis, October 15.th- 19.th, 2018, Levico Terme (Trento), Italy
• Separability of X-shaped multi-qubit states, Jul 24, 2018, International Workshop on Operator Theory and Applications, July 23-27, 2018 East China Normal Univ. Shanghai, China
• Separable states with unique decompositons, Jul 19, 2018, 18th Workshop: Noncommutative Probability, Operator Algebras, Random Matrices and Related Topics, with Applications, 15.07.2018 - 21.07.2018, Bedlewo, Poland
• Positivity of multi-linear maps and applications to separability criteria for multi-qubit states Jun 27, 2018, Operator Algebra Seminar, Department of Mathematics, Univ. Tokyo, Tokyo, Japan
• Separability of multi-qubit states in terms of diagonal and anti-diagonal entries, Jun 24, 2018, The 7th International Conference on Matrix Analysis and Applications, June 22-25, 2018, Nagano, Japan
• Lengths of separable states, Jun 10, 2018, 2018 International Conference on Matrix Inequalities and Matrix Equations, June 8-10, 2018, Shanghai University, Shanghai, China
• 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

== 2017 ==

• 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

== 2016 ==

• 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

== 2015 ==

• 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

== 2014 ==

• 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

== 2013 ==

• 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

== 2012 ==

• 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

== 2011 ==

• 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