| Nature of existence: | Set theory, Number theory |
| Processes: | Calculus, Dynamical systems |
| Creativity and intelligence: | Combinatorics, Artificial intelligence |
| Society and culture: | Game theory, Social network analysis |
| Spirituality and philosophy: | Logic, Decision theory |
| Arts and aesthetics: | Geometry, Fractals |
| Environment and health: | Statistics, Epidemiology |