서울대 작용소 세미나 1997 Jun 13: 강병재(Univ. of California at Berkeley); Construction of Non-Compact Quantum Groups in the C*-Algebra Frame Work 2002 Jul 19: 강병재(Univ. of Kansas); Noncommutative geometry, quantum groups, and Hopf C*-algebras 2005 Jun 3: 강병재(Univ. of Nevada); Quantum groups obtained by (twisted) bicrossed product construction 2005 Jun 27: 강병재(Univ. of Nevada); Multiplicative unitary operators and quantum groups 2005 Jul 7: 강병재(Univ. of Nevada); Multiplier Haagerup tensor product and Hopf C^*-algebras 2013 Jul 19: 강병재(Canisius College, Buffalo); Definition of a locally compact quantum groupoid in the C*-algebra framework 2017 May 24: 강병재(Canisius College, Buffalo); Antipode map on quantum groups and quantum groupoids