verb
- performing the logical operation of obversion, in which a proposition is converted by negating both the predicate and the quality of the original statement
Usage: logic; formal reasoning
Examples
- In formal logic, obverting the statement 'All cats are animals' yields 'No cats are non-animals.'
- The student practiced obverting categorical propositions as part of her logic course.
- Obverting a negative statement requires careful attention to the rules of logical conversion.
- Teachers often use obverting exercises to help students understand the structure of logical arguments.