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  • Seminars and Colloquia

6/2(Tue) 16:00
Tony Huynh(Sapienza Università di Roma)
Discrete Math

6/2(Tue) 16:30
Jae Kwang Kim(Iowa State Univ.)
MathSci Seminar

6/11(Thu) 16:30
Rob de Jeu(Vrije Universiteit Amsterdam)
Colloquium

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  • Conferences and Workshops

7/2(Thu) ~ 7/3(Fri)
KAIST 창의학습관 터만홀
Conf. / Workshop

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

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

8/3(Mon) ~ 8/14(Fri)
3435, E6-1 빌딩, KAIST, 대전 & 1114 회의실, KIAS, 서울
Conf. / Workshop

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  • 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 \(A\).)

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