Mathematics
- Algorithms (NP-completeness, NP-hardness, Percoluation theory, etc.)
- Analysis (Ordinary differential equation, Oscillation, etc.)
- Geometry (Plane (Geometry), etc.)
- Logic and foundations of mathematics (Ontology (information science), P vs NP problem, etc.)
- Number systems (Random variable, Random walk, etc.)
- Set theory (Parametric Polymorphism, Partially Ordered Set, etc.)
- Topology (Periodic point, Poincare map, etc.)
Science
- Computer science (Programming Language, Programming tool, etc.)
- Cognitive science (Numerical cognition, Object of the mind, Object Permanence, etc.)
- Environmental science (Renewable Energy, etc.)
- Physics (Rayleigh-Bernard convection, etc.)
- Psychology (Preadolescence, Prenatal development, etc.)
- Developmental biology (Puberty, etc.)
Computing
- Algorithms (Pseudocode, etc.)
- Artificial intelligence (Reasoning System, etc.)
- Human-computer interaction (Outliner, etc.)
- Information theory (Personal knowledge base, etc.)
- Programming (Problem Solving, etc.)
Philosophy
- Metaphysics (Notion (philosophy), Nous, etc.)
- Epistemology (Observation, etc.)
- Ethics (Occupational therapy, etc.)
- Logic (Ontology (information science), Ontology (information service), etc.)
- History of philosophy (Ontology, etc.)
Psychology
- Cognitive psychology (Personification, etc.)
- Behavioral psychology (Persuasion, etc.)
- Developmental psychology (Physical Change, Physical Object, etc.)
- Emotions and aesthetics (Piecewise-deterministic Markov process, Pitch (music), etc.)
- Environmental psychology (Plain Language, Play (activity), Playground, etc.)
- Positive psychology (Predictability, Principle, etc.)
- Social psychology (Property (philosophy), Proposition, Propositional formula, etc.)