Subjective idealism, or empirical idealism or immaterialism, is a form of philosophical monism that holds that only minds and mental contents exist. It entails and is generally identified or associated with immaterialism, the doctrine that material things do not exist. Subjective idealism rejects dualism, neutral monism, and materialism; it is the contrary of eliminative materialism, the doctrine that all or some classes of mental phenomena (such as emotions, beliefs, or desires) do not exist, but are sheer illusions.

• Direct representation , virtual Image , vision , APPARENCE, Apparition, Phantasm, Shew, direct realism
• concept , NOTION, Conception , abstraction , cognitive representation
• dream , mental representations, thought experiments , hypothesis

• Study of static immaterialistic substance
• Study of dynamic immaterials
• Senses or sensation
• Emotions
• Humanities
• power
• change
• space and time theory
• scientific fields , container , Science is a field or container , knowledge fields , A field in which knowledge or information is present
  • spatiotemporal containers
• theory of immaterialistic relations and interactions

• dimensions , length , area , volume
• linear space , spatial frames , fields , spatial containers , spatial domains
• graphical domain , coordinate space , mathematical domain , platonic realm
• Spatial means / means of movement , hollow space , cavity , spatial means
  • spatial path
• 2d box space
• 2d open square gate