旅 On the Road to Shigaraki in Kouga and Iga Summary Travel is an act for human beings to visit new places and experience different cultures and histories. Th... 2023.07.02 旅歴史紀行読書
数学:Mathematics Science Fiction Novel “Three Bodies,” the Three Bodies Problem, and Machine Learning Technology Introduction I'm reading "three bodies" (santai)vol1, vol2, vol3. Three Bodies is a full-length science ... 2023.07.01 数学:Mathematics読書