https://ryuma-orita.netlify.app/lecture/Recent content in Teaching on Ryuma ORITAHugo -- gohugo.ioen© 2026 Ryuma ORITAThu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_enshu_a/Thu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_enshu_a/Term 3, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026w_enshu_b/Thu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_enshu_b/Term 4, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026w_geometryiia/Thu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026w_geometryiib/Thu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026w_difftopom/Thu, 01 Oct 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026w_difftopom/For master’s students; Semester 2, Thu. Period 3 · Graduate School of Integrated Studies and Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026s_difftopod/Wed, 01 Apr 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026s_difftopod/For doctoral students; Semester 1, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026s_geometryia/Wed, 01 Apr 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026s_geometryia/Term 1, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026s_geometryib/Wed, 01 Apr 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026s_geometryib/Term 2, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026s_kagakutoshakai/Wed, 01 Apr 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026s_kagakutoshakai/Intensive course (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2026s_kagakugijutsutoshakai/Wed, 01 Apr 2026 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2026s_kagakugijutsutoshakai/Terms 1–2, Wed. Period 3 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025w_geometryiib/Mon, 08 Dec 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025w_enshu_b/Thu, 04 Dec 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025w_enshu_b/Term 4, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025w_geometryiia/Mon, 06 Oct 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025w_enshu_a/Thu, 02 Oct 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025w_enshu_a/Term 3, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025w_difftopod/Wed, 01 Oct 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025w_difftopod/For doctoral students; Semester 2, intensive course · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_kagakutoshakai/Thu, 21 Aug 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_kagakutoshakai/Intensive course (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_sentansouron/Tue, 22 Jul 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_sentansouron/Semester 1 intensive course by Prof. Yuichi Ike (The University of Tokyo) · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_geometryib/Mon, 09 Jun 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_geometryib/Term 2, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_difftopom/Thu, 10 Apr 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_difftopom/For master’s students; Semester 1, Thu. Period 3 (irregular) · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_kagakugijutsutoshakai/Wed, 09 Apr 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_kagakugijutsutoshakai/Terms 1–2, Wed. Period 3 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025s_geometryia/Tue, 08 Apr 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025s_geometryia/Term 1, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2025_zemi/Tue, 01 Apr 2025 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2025_zemi/D2: 1, D1: 1, M2: 1, M1: 1, B4: 5 (AY 2025) · Faculty of Science and Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024w_enshu_b/Thu, 05 Dec 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024w_enshu_b/Term 4, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024w_geometryiib/Mon, 02 Dec 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024w_geometryiia/Mon, 07 Oct 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024w_difftopod/Thu, 03 Oct 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024w_difftopod/For doctoral students; Semester 2 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024w_enshu_a/Thu, 03 Oct 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024w_enshu_a/Term 3, Thu. Period 2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024s_geometryib/Mon, 10 Jun 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024s_geometryib/Term 2, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024s_sentansouron/Tue, 07 May 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024s_sentansouron/Semester 1 intensive course by Prof. Yuichi Ike (Kyushu University) · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024s_difftopom/Thu, 11 Apr 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024s_difftopom/For master’s students; Semester 1 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024s_kagakugijutsutoshakai/Wed, 10 Apr 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024s_kagakugijutsutoshakai/Terms 1–2, Wed. Period 3 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024s_geometryia/Mon, 08 Apr 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024s_geometryia/Term 1, Mon. Period 3 & Tue. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2024_zemi/Mon, 01 Apr 2024 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2024_zemi/D1: 1, M2: 1, M1: 1, B4: 4 (AY 2024) · Faculty of Science and Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023w_geometryiib/Mon, 04 Dec 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023w_geometryiia/Mon, 16 Oct 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_shizenkagakusouron1/Mon, 16 Oct 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_shizenkagakusouron1/Semester 2, Mon. Period 4 (co-taught) · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023w_difftopod/Thu, 05 Oct 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023w_difftopod/For doctoral students; Semester 2, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_kisoenshu_b/Fri, 09 Jun 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_kisoenshu_b/Term 2, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_rigakukisoenshu/Thu, 08 Jun 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_rigakukisoenshu/Term 2, Thu. Periods 1–2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_geometryib/Thu, 08 Jun 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_geometryib/Term 2, Mon. Period 3 & Thu. Period 4 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_kisoenshu_a/Fri, 07 Apr 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_kisoenshu_a/Term 1, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_geometryia/Thu, 06 Apr 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_geometryia/Term 1, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023s_difftopom/Thu, 06 Apr 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023s_difftopom/For master’s students; Semester 1, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2023_zemi/Sat, 01 Apr 2023 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2023_zemi/M2: 3, M1: 1, B4: 6 (AY 2023) · Faculty of Science and Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022w_geometryiib/Mon, 05 Dec 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022w_difftopod/Thu, 06 Oct 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022w_difftopod/For doctoral students; Semester 2, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022w_the_world/Wed, 05 Oct 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022w_the_world/Term 3, Wed. Periods 4–5 (co-taught) · Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022w_geometryiia/Mon, 03 Oct 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_sentansouron/Wed, 24 Aug 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_sentansouron/Semester 1 intensive course by Prof. Tatsuya Miura (Tokyo Institute of Technology) · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_kisoenshu_b/Fri, 17 Jun 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_kisoenshu_b/Term 2, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_rigakukisoenshu/Thu, 16 Jun 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_rigakukisoenshu/Term 2, Thu. Periods 1–2 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_geometryib/Mon, 13 Jun 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_geometryib/Term 2, Mon. Period 3 & Thu. Period 4 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_kisoenshu_a/Fri, 08 Apr 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_kisoenshu_a/Term 1, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_geometryia/Thu, 07 Apr 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_geometryia/Term 1, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022s_difftopom/Thu, 07 Apr 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022s_difftopom/For master’s students; Semester 1, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2022_zemi/Fri, 01 Apr 2022 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2022_zemi/M1: 3, B4: 4 (AY 2022) · Faculty of Science and Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021w_geometryiib/Mon, 06 Dec 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021w_difftopod/Thu, 07 Oct 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021w_difftopod/For doctoral students; Semester 2, Thu. Period 3 · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021w_the_world/Wed, 06 Oct 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021w_the_world/Term 3, Wed. Periods 4–5 (co-taught) · Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021w_geometryiia/Mon, 04 Oct 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021s_difftopom/Mon, 13 Sep 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021s_difftopom/For master’s students; Semester 1, intensive course · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021s_kisoenshu_b/Fri, 11 Jun 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021s_kisoenshu_b/Term 2, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021s_geometryib/Thu, 10 Jun 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021s_geometryib/Term 2, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021s_kisoenshu_a/Fri, 09 Apr 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021s_kisoenshu_a/Term 1, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021s_geometryia/Thu, 08 Apr 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021s_geometryia/Term 1, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2021_zemi/Thu, 01 Apr 2021 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2021_zemi/B4: 4 (AY 2021) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020w_geometryiib/Mon, 07 Dec 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020w_geometryiib/Term 4, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020w_geometryiia/Mon, 05 Oct 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020w_geometryiia/Term 3, Mon. Period 3 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020s_difftopom/Mon, 31 Aug 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020s_difftopom/For master’s students; Semester 1, intensive course · Graduate School of Science and Technology, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020s_kisoenshu_b/Fri, 19 Jun 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020s_kisoenshu_b/Term 2, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020s_geometryib/Thu, 18 Jun 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020s_geometryib/Term 2, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020s_kisoenshu_a/Fri, 24 Apr 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020s_kisoenshu_a/Term 1, Fri. Period 4 (co-taught) · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2020s_geometryia/Mon, 20 Apr 2020 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2020s_geometryia/Term 1, Mon. Period 3 & Thu. Period 2 · Faculty of Science, Niigata Universityhttps://ryuma-orita.netlify.app/lecture/2019w/Tue, 01 Oct 2019 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2019w/Part-time teaching assistant · College of Science and Engineering, Aoyama Gakuin Universityhttps://ryuma-orita.netlify.app/lecture/2019s_analysis/Mon, 01 Apr 2019 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2019s_analysis/Part-time teaching assistant (biweekly) · College of Science and Engineering, Aoyama Gakuin Universityhttps://ryuma-orita.netlify.app/lecture/2019s_ode/Mon, 01 Apr 2019 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2019s_ode/Part-time teaching assistant (biweekly) · College of Science and Engineering, Aoyama Gakuin Universityhttps://ryuma-orita.netlify.app/lecture/2016w/Sat, 01 Oct 2016 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2016w/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2016s/Fri, 01 Apr 2016 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2016s/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2015w/Thu, 01 Oct 2015 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2015w/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2015s/Wed, 01 Apr 2015 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2015s/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2014w/Wed, 01 Oct 2014 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2014w/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2014s/Tue, 01 Apr 2014 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2014s/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2013w/Tue, 01 Oct 2013 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2013w/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2013s/Mon, 01 Apr 2013 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2013s/Teaching assistant · Faculty of Science, The University of Tokyohttps://ryuma-orita.netlify.app/lecture/2012/Sun, 01 Apr 2012 00:00:00 +0000https://ryuma-orita.netlify.app/lecture/2012/Teaching assistant · College of Arts and Sciences, The University of Tokyo