First of all, I'm very happy to meet you and to have the opportunity of giving this course in this beautiful city of Izmir. Well, let me introduce myself briefly. I visited this country in 1998 for the first time in my life. That was for a conference held at Bilkent University in Ankara. I was really impressed the cultural differences. People are very shy at the beggining, very different from American, for instance. But after a while they are really warm and friendly. It's strange to say three academic person propose me to come. The first one is from Erciyes University at Kaiseri. After thinking a couple of month I send my cv to them, but maybe because of beaurocracy of the Government, The procedure did never proceed. The second one is from Anadolu University at Eskisehir. So, I was there last year as a visiting researcher. But unfortunately, without giving any courses due to my language. Then the third. I came here this april, and started my carrire with this University. I used to teach Math in Japan.... I hope the course will be easy to understand including English and helpful as well. If you have questions, please feel free to ask any question at any moment. Do not hesitate.