B.S. Mathematics (1993~1997) Korea Advanced Institute of Science and Technology (KAIST), Korea
M.S. Mathematics (1997~1999) Korea Advanced Institute of Science and Technology (KAIST), Korea
Ph.D. Applied Mathematics (1999~2004) Korea Advanced Institute of Science and Technology (KAIST), Korea
Work Experience
1. Professor at Seoul National University, Seoul (03/2020 ~ present)
2. Assistant/Associate Professor at Seoul National University, Seoul (03/2013 ~ 02/2020)
3. Assistant Professor at Chungbuk National University, Cheongju (03/2009 ~ 02/2013)
4. Postdoctral Fellow at University of Waterloo, Waterloo, Canada (07/2007 ~ 02/2009)
5. Research Assistant Professor at POSTECH, Pohang (02/2007 ~ 07/2007)
6. Visiting Scholar at TAMU, College Station, USA (10/2006 ~ 12/2006)
7. Visiting Postdoc (supported by KOSEF) at UIUC, Urbana-Champaign, USA (11/2005 ~ 10/2006)
8. BK21 Postdoc at Seoul National University, Seoul (03/2004 ~ 11/2005)
Research
Interests
Abstract harmonic analysis, Non-commutative probability, Non-commutative Lp spaces, Operator spaces, Quantum Information theory and Topological quantum groups.
Books
1. 함수해석학 입문 (Introduction to Functional Analysis), 경문사 (Kyung Moon Sa), September 2026.
Publications by topics
Geometry of Banach spaces and Operator spaces
1. (with C. Choi) Operators of Fourier type p with respect to some subgroups of a locally compact abelian group. Arch. Math.(Basel) 81 (2003), No.4, 457-466.
10. (with Ebrahim Samei and Matthew Wiersma) New tensor products of C*-algebras and characterization of type I C*-algebras as rigidly symmetric C*-algebras. Trans. Amer. Math. Soc. 377, Number 6 (2024), 4223-4253.
2. (with E. Ricard) Hypercontractivity on the q-Araki-Woods algebras. Comm. Math. Phys, 305(2) (2011), 533-553.
3. (with N. Obata) Distance-k graphs of hypercube and q-Hermite polynomials. Infin. Dimens. Anal. Quantum Probab. Relat. Top.,
Vol. 16, No. 2 (2013) 1350011 (12 pages).
4. (with Y. Hibino and N. Obata) Asymptotic Spectral Distributions of Distance k-Graphs of Cartesian Product Graphs, Colloq. Math. 132 (2013), 35-51.
Abstract harmonic analysis on groups
1. (with B. E. Forrest and E. Samei) Projectivity of modules over Fourier algebras. Proc. London Math. Soc. (2011) 102(4): 697-730.
2. (with E. Samei) Beurling-Fourier Algebras, operator amenability and Arens Regularity. J. Funct. Anal. 262 (2012), 167-209.
3. (with B. E. Forrest and E. Samei) Projectivity of modules over Segal algebras. Houston J. Math. Volume 39, No. 2 (2013) 531-560.
4. (with B. Collins and P. Sniady) Dimensions of components of tensor products of the linear groups representations, Studia Math. 220 (2014), 221-241.
5. (with E. Samei and N. Spronk) Some weighted group algebras are operator algebras. Proc. Edinburgh Math. Soc., Volume 58 / Issue 02 / June 2015, pp 499-519.
6. (with M. Ghandehari, E. Samei and N. Spronk) Some Beurling-Fourier algebras are operator algebras. Trans. Amer. Math. Soc. 367, Number 10 (2015), 7029-7059.
7. (with J. Ludwig, E. Samei and N. Spronk) Weak amenability of Fourier algebras and local synthesis of the anti-diagonal, Adv. Math. 292 (2016), 11-41.
8. (with E. Samei and N. Spronk)
Similarity degree of Fourier algebras, J. Funct. Anal. 271 (2016), 593-609.
9. (with S.-G. Youn) New deformations of Convolution algebras and Fourier algebras on locally compact groups, Canad. J. Math. 69 (2017), 434-452.
10. (with E. Samei and N. Spronk) p-Fourier algebras on compact groups, Revista Matematica Iberoamericana, Volume 34, Issue 4 (2018) 1469-1514.
11. (with E. Samei and N. Spronk)
Corrigendum: Similarity degree of Fourier algebras, J. Funct. Anal. Volume 277, Issue 3 (2019) 958-964.
12. (with M. Ghandehari, J. Ludwig, N. Spronk and L. Turowska)
Beurling-Fourier algebras on Lie groups and their spectra, Adv. Math. 388 (2021), 107861.
14. (with Heon Lee)
Analytic subalgebras of Beurling-Fourier algebras and complexification of Lie groups, Trans. Amer. Math. Soc. 378 (2025), 6227-6263.
Abstract harmonic analysis on quantum groups
1. (with M. Caspers and E. Ricard) Operator biflatness of the L^1-algebras of compact quantum groups, J. Reine Angew. Math. (Crelle's Journal) Volume 2015, Issue 700, Pages 235-244.
2. (with U. Franz and A. Skalski)
Integration over the quantum diagonal subgroup and associated Fourier-like algebras, Int. J. Math. Vol. 27, No. 09, 1650073 (2016).
3. (with U. Franz) Beurling-Fourier algebras of compact quantum groups: characters and finite dimensional representations, Indiana Univ. Math. J. 70 No. 2 (2021), 605--637.
Quantum information theory
1. (with M. Brannan, B. Collins and S.-G. Youn)
Temperley-Lieb quantum channels, Comm. Math. Phys., volume 376, pages 795--839 (2020).
2. (with C. Beny and S. J. Park)
Twisted Fourier analysis and pseudo-probability distributions, preprint, arXiv:2004.13860.
3. (with S.-G. Youn)
Quantum channels with quantum group symmetry, Comm. Math. Phys., volume 389, pages 1303?-1329 (2022).
4. (with E. Chang, J. Kim, H. Kwak, and S.-G. Youn) Irreducibly SU(2)-covariant quantum channels of low rank. Reviews in Mathematical Physics, Vol. 34, No. 07, 2250021 (2022)
5. (with C. Beny, J. Crann, S. J. Park and S.-G. Youn) Gaussian quantum information over general quantum kinematical systems I: Gaussian states. Lett. Math. Phys. 115 (2025), 32.
Honours
TJ Park Junior Faculty Fellowship, POSCO TJ Park Foundation, 2012.
2012 Basic research outstanding achivements (50 selected) supported by ministry of education, science and technology, Korea.
2016 Brain Pool program (KOFST) outstanding achivements, KOFST, 2017.
2018 Research awards, College of Natural Sciences, Seoul National University.
Former PhD students
Sang-Gyun Youn
(Assistant professor, Department of Mathematics Education, SNU)
Former Postdoc
Xiao Xiong
(Professor at Harbin Institute of Technology, Harbin, China)
Editorship
Editor, Journal of the Korean Mathematical Society (2015 ~ 2023)
Funded Projects
Non-commutative Lp-theory in abstract harmonic analysis
1/5/2009 - 30/4/2012
NRF (한국연구재단)
Non-commutative extensions of harmonic analysis
1/5/2012 - 30/4/2015
NRF (한국연구재단)
Analysis on locally compact groups via Fourier algebras and its quantum extension
1/5/2015 - 30/4/2018
NRF (한국연구재단)
Functional analytic approach to quantum channel capacities
1/9/2017 - 31/8/2022
NRF (한국연구재단)
Teaching
Spring, 2026
함수해석학 (001) Functional Analysis
Fall, 2025
수학자를 위한 물리학 (001) (공동강의) Physics for Mathematicians (Co-teaching)
Spring, 2025
함수해석학 (001) Functional Analysis
Spring, 2024
미적분학 1 (001) Calculus 1
Fall, 2023
수학 2 (001) Mathematics 2
Fall, 2022
함수해석학 2 (001) Functional Analysis 2
Spring, 2022
함수해석학 1 (001) Functional Analysis 1
Fall, 2021
복소해석학 Complex Analysis
정보사회와 수학 Mathematics and Information Society
Spring, 2021
실변수함수론 Real Analysis
Fall, 2020
정보사회와 수학 Mathematics and Information Society
푸리에해석과 응용 Fourier Analysis and Applications
Spring, 2019
실변수함수론 (대학원) Real Analysis (Graduate)
리군론 Lie Groups
Fall, 2018
수학 및 연습 2 Calculus 2
함수해석학 2 (대학원) Functional Analysis 2 (Graduate)
Spring, 2018
미분방정식 Differential Equations
실변수함수론 (학부) Real Analysis (Undergraduate)
Fall, 2017
해석학특강 (양자정보와 함수해석) Topics in Analysis (Quantum Information and Functional Analysis)
Spring, 2017
수학 및 연습 1 (001강좌) Calculus 1
리군론 Lie Groups
Fall, 2015
수학 및 연습 2 (022강좌) Calculus 2
복소해석학 (대학원) Complex Analysis (Graduate)
Spring, 2015
수학 및 연습 1 (028강좌, Lecture in English) Calculus 1
실해석학 (대학원) Real Analysis (Graduate)
Fall, 2014
함수해석학 2 (대학원) Functional Analysis 2 (Graduate)
Spring, 2014
수학 및 연습 1 (009강좌) Calculus 1
작용소대수 (대학원) Operator Algebra (Graduate)
Fall, 2013
복소해석학 (대학원) Complex Analysis (Graduate)
Spring, 2013
수학 및 연습 1 (019강좌) Calculus 1
실변수함수론 (학부) Real Analysis (Undergraduate)