obversion
/ɑbˈvɜrʒən/
noun
- The act of turning something so that the opposite side or aspect is presented.
- The artist's obversion of the sculpture allowed viewers to see its back details.
- In logic, obversion changes a statement into its equivalent by negating the predicate.
- The obversion of the coin revealed a hidden inscription.
- A logical operation that transforms a proposition into another proposition by negating the predicate and changing the quality (e.g., 'All S are P' becomes 'No S is non-P').
- Obversion is a basic rule in categorical logic.
- Understanding obversion helps in analyzing arguments.
- The student practiced obversion by converting 'Some dogs are friendly' into 'Some dogs are not unfriendly.'