서울대 작용소 세미나 2009 Jun 5: 권현경(Southern Illinois Univ. Edwardsville); Curvature Condition for Noncontractions does not imply Similarity to the Backward Shift 2009 Nov 13: 권현경(이화여대); Recent Developments in the Similarity Problem? 2010 May 14: 권현경(서울대); The similarity problem in the Bergman space setting 2010 Oct 29: 권현경(서울대); curvature invariants and generalized operator models 2011 Apr 15: 권현경(서울대); Model theory for biisometries 2012 Dec 18: 권현경(The University of Alabama); Similarity of Operators and the Dirichlet Space 2013 Jun 14: 권현경(Univ of Alabama); The Cowen-Douglas Operators and Spanning Holomorphic Cross-sections 2013 Jun 28: 권현경(Univ of Alabama); Similarity of Cowen-Douglas operators and operator models 2015 Dec 4: 권현경(The University of Alabama); The Nullstellensatz and the corona theorem