Catalogued

Square of opposition

Made by: Aristotle (theory); diagram added by later commentators
Year: 4th century BCE - later
Field: Logic, language and computing
Kind: Concept diagram
Room: Links and trees — Placed by reading its description, not yet studiedCould also hang in: Charts that compute

Skeleton drawing, not the original plate

121 other forms share this skeleton

Source

Attribution less certain: contested, or no single inventor recorded