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"What happened to Ieyasu Tokugawa?" What is the answer to the geometric problem?
This time, the story of Anjin Miura. What is the relationship between Anjin Miura, geometrics, and Ieyasu Tokugawa?
William Adams, who has a Japanese name that combines "Miura", which is derived from the territory of Yokosuka worshiped by Ieyasu Tokugawa, and "Anjin" (a pilot) derived from monitoring magnets as a pilot, is an Englishman. But what language did you interact with the Japanese? I have lived in Japan for many years, so I think I was able to understand Japanese a little, but I don't think it's English because there is no description that I taught Japanese English to Japanese people. It is expected that he interacted mainly with his "Portuguese". For example, when John Sales, commander of the East India Company, came to Japan, it is expected that a relay interpreter between English, Portuguese and Japanese was performed with a Portuguese interpreter.
In Anjin Miura's text, there is a sentence I learned some points of jeometry, and understanding of the art of mathmaties. I mentioned here is Ieyasu. Grammarally the underlined part appears to be incorrect, but it is not an error. (I wrote it with a pile of I'm wear. I'm wear. I'm don't know.) Learning in Shakespeare's era means "teaching" when it has an indirect purpose. So the correct answer is I teach you some points of geometry, and understanding of the art of mathematics. Ieyasu learned geometrics from Anjin Miura, right?
If this is true, Ieyasu will be the first Japanese to follow geometrics.
Nihonbashi area when Anjin Miura lived.
The situation in the vicinity of Anjin Nihonbashi, where Adams worshiped by Ieyasu, at that time was in the midst of returning from the Philippines to Spain in 1609, Don Rodrigo (Admiral Manila), who was forced to visit Japan due to the ship being wrecked on his way back to Spain from the Philippines in 1609, It is introduced as a witness to Ieyasu. This is probably the appearance of Edo when Anjin Miura lived (September 1564-May 1620).
"The town of Edo has 150,000 residents along the sea, and a large river flows through the center of the town, connecting quite large ships, so much of the food can be easily obtained by the river. The price is therefore very low. A boy can live enough if a half-real (1 real = about 27.0 yen) per day. All prices are inexpensive, and bread is pure white and good quality one is half loaf. This is 1 rare for 15 pieces. Bread, like fruits, is food eaten by Japanese people other than regular meals, but bread made in Edo town is the best in the world. However, because there are few buyers, it is almost as free."
Reference:
1) Derived from Nihonbashi Surugacho (out of print): Kiichiro Okano, the third president of Suruga Bank, drafted by Suruga Real Estate Co., Ltd. Cooperation Editing and publishing cooperation: Chuo Koron Business Publishing
2) Nihonbashi Private Note: Yasaburo Ikeda
3) Nihonbashi Shi: Ki Kimura