contraposition

Therefore, by contraposition must be a power of 2. "

However, a contraposition may also exist in two complex conditionals, if they are similar.

Strictly speaking, a contraposition can only exist in two simple conditionals.

Note that the method of transposition and contraposition should not be confused.

In strict logical terms, via contraposition, this statement is equivalent to:

For contraposition in the field of symbolic logic, see Transposition (logic).

The mediator does not obey to any of the parties, and is a third party, looking at the contraposition from an external point of view.

This kind of indirect proof is called proof by contraposition, being the contrapositive to.

A similar, but not identical tool for proving mathematical theorems is the proof by contraposition.

This is considered full contraposition.

If the axioms for contraposition are added, also Man(Z) becomes a theorem.

The contraposition with De Gasperi was very clear.

By contraposition, this is the same thing as "whenever P is true, so is Q".

Contraposition: If then .

Therefore, by contraposition, a necessary condition for unit treatment additivity is that the variance is constant.

The contraposition of the "E" proposition is valid only with limitations (per accidens).

As Greek artists began to study human movement and anatomy, they discovered that living humans tend to display a "weight shift" or contraposition when standing.

In other words, to prove by contraposition that , prove that .

Thus, partial contraposition can be obtained conditionally in an "E" type proposition with a change in quantity.

In this sense the use the term "contraposition" is usually referred to by "transposition" when applied to hypothetical propositions or material implications.

In logic, contraposition is a law, which says that a conditional statement is logically equivalent to its contrapositive.

He is unsatisfied with the oversimplified polar contraposition between patriotism and rusophobia.

From these statements, it might appear one could make these deductions by contraposition and conditional disjunction:

The schema of contraposition:

Notice that contraposition is a valid form of immediate inference only when applied to "A" and "O" propositions.