- Space and time (3)
- 宇宙論 (3)
- Artificial intelligence (2)
- Geometry, Differential (2)
- Mathematical physics (2)
- Quantum gravity--Congresses (2)
- Quantum theory (2)
- Spinor analysis (2)
- Thought and thinking (2)
- 時間・空間 (2)
- 物理学 (2)
- 量子力学 (2)
- 量子論 (2)
- Astrophysics (1)
- Computers (1)
- Cosmology (1)
- Gödel's theorem (1)
- Physics--Philosophy (1)
- Science--Philosophy (1)
- 人工知能 (1)
- 人工頭脳 (1)
- 相対性理論 (1)
- 脳 (1)
- 記号論理学 (1)