contraposition

Example Sentences

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Except Obversion, Conversion and Contraposition, it has not been usual to bestow special names on these processes or their results.

From Logic Deductive and Inductive by Read, Carveth

Thus in Obversion and Conversion by Contraposition, the homogeneity of the negative term is tacitly assumed; it is assumed that A and not-A are of the same kind.

From Logic, Inductive and Deductive by Minto, William

Contraposition needs no justification by the Laws of Thought, as it is nothing but a compounding of conversion with obversion, both of which processes have already been justified.

From Logic Deductive and Inductive by Read, Carveth

There is no reason why the propositional form should not be called the Converse by Contraposition, or the Contrapositive Converse, in accordance with traditional usage.

From Logic, Inductive and Deductive by Minto, William

It is for dealing with these intractable moods that Contraposition is required.

From Logic, Inductive and Deductive by Minto, William