Goutama = the founder of the school = Nyayakarika
Defi: A definite cognition which is produced by sense-object contact and is unerring.
Perception into :
 Ordinary [Loukika] visual-seeing, auditory-hearing, tactual-touching, qustatory-taste, olfactory-smell, mental-processes of mind.
 Extra-ordinary: Samanyalaksana, Jnanalaksana, Yogaja
1. Nirvikalpa [indeterminate]
2. Savikalpa [determinate]
3. Pratyabhijna [recognition]