¼­¿ï´ë ÀÛ¿ë¼Ò ¼¼¹Ì³ª 2005 Dec 19: Nobuaki Obata (Tohoku Univ.); Non-commutative aspect to stochastic analysis: From coin tossing to quantum white noise 2015 Jul 24: Nobuaki Obata (Tohoku Univ.); Spectral Analysis of Graphs using Quantum Probability 2015 Jul 27: Nobuaki Obata (Tohoku Univ.); Spectral Analysis of Graphs using Quantum Probability 2015 Jul 28: Nobuaki Obata (Tohoku Univ.); Spectral Analysis of Graphs using Quantum Probability