• Department News



  • Seminars and Colloquia

7/13(Mon) 11:00
Andreas Galanis(Department of Computer Science, University of Oxfo)
Discrete Math

7/16(Thu) 16:30
Dong Quan Ngoc Nguyen(Univ. Texas at Austin)
ASARC Seminar

7/20(Mon) 15:30
Johann Makowsky(Technion-Israel Institute of Technology, Haifa)
KMRS Seminar

7/21(Tue) 15:30
Johann Makowsky(Technion – Israel Institute of Technology, Haifa)
KMRS Seminar

  • Conferences and Workshops

7/6(Mon) ~ 7/10(Fri)
KI Building, KAIST
Conf. / Workshop

7/8(Wed) ~ 7/11(Sat)
1501, Building E2-1, KAIST
Conf. / Workshop

8/3(Mon) ~ 8/7(Fri)
Conf. / Workshop

8/3(Mon) ~ 8/14(Fri)
KAIST 자연과학동 E6-1, 3435 & 고등과학원 1114 회의실
Conf. / Workshop


  • 2015-12 Rank
    Let \(A\) be an \(n\times n\) matrix with complex entries. Prove that if \(A^2=A^*\), then \[\operatorname{rank}(A+A^*)=\operatorname{rank}(A).\] (Here, \(A^*\) is the conjugate transpose of \(A\).) (This is the last problem of this semester. Thank you for participating KAIST Math Problem of the Week.)